The documents on the observance of the Sacred Saiyidul Aayaad Shareef means Eid-e-Milade Habeebullah Swallallahu Alaihi wa Sallam meant the celebration of Biladat (Birth) Shareef of Hudur Pak Swallallahu Alaihi wa Sallam or expressing Eid means Happiness is Farad.

The observance of the Sacred Saiyidul Aayaad Shareef means Eid-e-Milade Habeebullah Swallallahu Alaihi wa Sallam meant the celebration of Biladat (Birth) Shareef of Hudur Pak Swallallahu Alaihi wa Sallam or expressing Eid means Happiness is Farad.

Saiyidul Mursalin, Imamul Mursalin, Shafeul Mujnabeyeen, Rahmatullil Alameen, Habeebullah Hudur Pak Swallallahu Alaihi wa Sallam is the source of whole world people. He is source of all Niamat (special favor) of Magnificent Allah Pak Rabbul Alameen. The satisfaction of Allah never comes without satisfying Noor-e-Mujassam Habeebullah Swallallahu Alaihi wa Sallam. The people who love Noor-e-Mujassam Habeebullah Swallallahu Alaihi wa Sallam would be loved by Allah Pak. And it is impossible to be Mum”meen (Believer)  without loving Noor-e-Mujassam Habeebullah Swallallahu Alaihis Salam.

Hudur Pak Swallallahu Alaihi wa Sallam declares in Hadith Shareef about the context- “No one would be Mu’meen untill he loves Hudur Pak Swallallahu Alaihi wa Sallam more than their parents, children and all. In other description, until he loves than their life and assets. Ref: Bukhari Sharif 1/6-Kitabul Iman - Hadith No. 14 and 15
It has meant from this Sahih Hadith Shareef that Iman means the love to Hudur Pak Swallallahu Alaihi wa Sallam more than all. And the characteristic of Imandar (Believers) is to express happiness with love on the arrival of Hudur Pak Swallallahu Alaihi wa Sallam. Magnificent Allah Pak Himself and Firishta Alaihimus Salam means the whole creation express Happiness on the arrival of Hudur Pak Swallallahu Alaihi wa Sallam.
Do you know who got hurt most on the day of Biladat Shareef (Death) of Hudur Pak Swallallahu Alaihi wa Sallam? “Iblish Saitan got most hurt of all. He got so much hurt that he cried with difficulty.
Saitan cried highly at four times-first time when Magnificent Allah Ta’la cursed him, second time when he was cast out of heaven, third time when Hudur Pak Swallallahu Alaihi wa Sallam got Biladat (Death) Shareef and fourth time when Surah Fatiha shareef revealed. Ref: Document: Al-Bedaya wan Nehaya - 266, 267 pages of Volume 2, Author: Abul Fida Hafiz Ibn Katheer Ad Damascus Rahmatullahi Alaihi. Publications: Maktabatul Ma'rafah, Beirut Lebanon
‘Eid’ (عيد) means to express happiness or joy. And ‘milad’ (ميلاد) means the time or day of birth. The word ‘An Nabiyya’ (النبى) means Noor-e-Mujassam, Habeebullah Huzur Pak Swallallahu Alaihi wa sallam. Therefore, in the lexical sense, ‘Eid Milad Nabiyyi’ (عيد ميلاد النبى) means Noor Mujassam, Habibullah Huzur Pak Sallallahu Alaihi Wasallam to express his happiness on the occasion of Biladat (Birth) Sharif in his honor.
In the terminological sense, 'Eid-e-Miladun Nabi' means the expression of happiness on the occasion of Biladat (Birth) Sharif Day of Noor-e-Mujassam Habeebullah Hudur Pak Swallallahu Alaihi wa sallam, to describe the Sana-Sifat (Praises), Fazayeel-Fazilat (Benefits), Shaan-Maan (Dignity), to say Salat-Salam (Prayer) and tasbeeh-tahleel for Noor-e-Mujassam Habeebullah Hudur Pak Swallallahu Alaihi wa sallam, to make Mubarak-discussion on his Sacred life.
Now look on the Mubarak order of Mu’meen Muslim on the arrival of Habeeb Swallallahu Alalihi wa Sallam. Magnificent Allah Pak declares- “O my Habeeb Swallallahu Alaihi wa Sallam! Tell the Ummah to express happiness for the grace and mercy (Hudur Pak Swallallahu Alaihi wa Sallam) of magnificent Allah. It is much better than that (wealth) which they accumulate. Ref: Sacred Surah Yunus Shareef and sacred verse shareef-58
Renowned Mufassir (Hadith experts), Hafij-e-Hadith (Hadith memorizer) Allahma Syuti Rahmatullahi Alaihi says on the above-mentioned verse shareef.
Meaning: Hadarat Abdullah Ibn Abbas Rawdiallahu Anhuma says that the Grace of Allah Pak means Ilm and the Rahmat means Hudur Pak Swallallahu Alaihi wa Sallam in the verse shareef. As Allah Pak says, “I have sent you for the whole universe.” Ref: Tafsweer Durrul Mansur-Surah-10, verse-58, Tafsweer-e-Ruhul Mayani, Tafsweer-e-Kabir.

It is mentioned in Tafsweer-e-Mayani-141page of six part-
Meaning: Hadrat Abush Shaikh Rahmatullahi Alaihi describes from Hadrat Abdullah Ibn Abbas Rawdiallahu Ta’la Anhuma, “Certainly ‘Fadal’ means the Ilm (knowledge) and ‘Rahmat’ means noor-e-Mujassam Habeebullah Swallallahu Alaihi wa Sallam.
So, it is seen that the celebration of Eid is the Order of Allah. And the Order of Allah refer to ‘Farad’ and ‘Wajeeb’.
It is mentioned in all the kitab of Ushule ‘Fikah’ that-
Meaning: The Order of Allah makes ‘Farad-Wajeeb’ normally. As it is described in Amar article of kitabullah chapter of Uchusul Shashee kitab-
Meaning: “You say your prayer because it is made ‘Farad’ by the obligatory sentence of sacred Quran shareef.”
It is declared in Similar sacred Hadith Shareef, “You (men) grow long your beard”. One fist amount of beard is made ‘Farad’ according to the obligatory sentence of sacred Hadith shareef.
Similarly, ‘Falyafrahu’ or expressing Mubarak Happiness or celebrating Eid of verse shareef -58 of Surah Yunus Shareef is an obligatory sentence. Expressing Mubarak Happiness or celebrating Eid is proved ‘Farad’ and ‘Wajeeb’ by this obligatory sentence.
Besides, Magnificent Allah Pak orders to celebrate Eid in many parts of sacred Quran Shareef and order to remember His Mubarak Niamot. Magnificent Allah declares, “Remember the Niamat (Favor) that you have given.” Ref: Surah Al-Imran Shareef: sacred verse shareef-103
Question: What is the best Niamat (Favour) of Magnificent Allah Pak.
It is commonly agreed that the best Niamat (favour) of Magnificent Allah is Habeebullah Hudur Pak Swallallahu Alaihi wa Sallam. Not only that the whole Niamat of universe is gifted to Hudur Pak Swallallahu Alaihi wa Sallam. And Hudur Pak Swallallahu Alaihi wa Sallam is the ‘Anti’mateel Kubra Alal Alam’ means the greatest Niamat (Blessing) of all the universe. Subhanallah!
Magnificent Allah Pak says in 103 number verse of Surah Al Imran Shareef to do Jikir (Remembering), to discuss, to express happiness. Subhanallah!
So, it is understood by the Verse Shareef that expressing Happiness remembering the best Niamat (favor) Noor-e-Mujassam Habeebullah Swallallahu Alaihi wa Sallam is the Order of Magnificent Allah Pak.
And any special Day is Eid Day which is cleared in the Quran Shareef. Magnificent Allah Pak declares, “Isa, Son of Maryam said, “O Allah, O Rab, send down to us a repast from heaven which may be at day of happy occasion for all the generation of past, present and future, and a sign from You, and give us provisions. You are the best Giver of Provisions.” Ref: Surah Mayidah: the sacred verse Shareef-114
It is mentioned in the above Verse Shareef, Hadrat Isa Alaihis Salam wants a repast from Heaven and the day of this revelation would be Happy like Eid for all the generations of Past, present and future. If the day of revelation of this repast is Eid day, why the day of Biladat (Birth) shareef of Habeebullah Hudur Pak Swallallahu Alaihi wa Sallam who is the Niamat and the root of all Niamat wouldn’t be Eid day? Can’t be happy on this day?
Of course, the day of Biladat (Birth) Shareef of Hudur Pak Swallallahu Alaihi wa Sallam would be Eid day. Not only that it would be the best Eid Means ‘Saiyidul Aaiyad Shareef’ among the Universe.
The good news of the arrival of Noor-e-Mujassam Habeebullah Hudur Pak Swallallahu Alaihi wa Sallam is given in many verses of sacred Quran Shareef and it is said clearly to express gratitude and to celebrate Eid.
There are many Hadith Shareef is reveled about the arrival of the Habeebullah Hudur Pak Swallallahu Alaihi wa Sallam, the beloved Habeeb of Magnificent Allah Pak Rabul Alamin. Such as-
Meaning: “Hey My Habeeb Noor-e-Mujassam Habeebullah Hudur Pak Swallallahu Alaihi wa Sallam! Certainly, I have sent you as a witness, good news giver and warner. So, You believe in Magnificent Allah Pak and His Habeeb Noor-e-Mujassam Habeebullah Hudur Pak Swallallahu Alaihi wa Sallam and render Mubarak Service, honor him and do Sana-Sifat (Praise) from dawn to dusk means all the time. Ref: The sacred Surah Fat’h Shareef: the sacred Verse -8-9
Meaning: “There has come to you a Rasul Swallallahu Alaihi wa Sallam, who is distressed by the losses you sustain, who is ardently desirous of your welfare and is tender and merciful to those who believe. Ref: The sacred Surah Tawbah: the sacred Verse Shareef-128
Meaning: “Hey My Habeeb Swallallahu Alaihi wa Sallam! I have sent you as a Rahmat (Grace) for the whole Universe. Ref: The Sacred surah Ambia: The sacred Verse Shareef-107
Meaning: “Certainly, Magnificent Allah Pak have done Ihsan (Mercy) that He sent to us Habeebullah Hudur Pak Swallallahu Alaihi wa Sallam who recites to them the verse of Allah and purifies their hearts and teach them the Kitab (Knowledge) and Hikmah (wisdom). Ref: Surah Al Imran: The Sacred Verse Shareef -168
Meaning: “Hey My Habeeb Swallallahu Alaihi wa Sallam! Certainly, I have sent you as witness, good news giver, warner and caller according to my command and as a light of Noor. Ref: Sacred Surah Ahjab Shareef: The Sacred verse shareef-45,46
Meaning: “Certainly, Hudur Pak Swallallahu Alaihi wa Sallam is a great Noor from Magnificent Allah Pak. Ref: the sacred Surah Maidah Shareef: sacred verse Shareef-15
Meaning: Magnificent Allah Pak commits to Hadrat Nabi-Rasul Alaihis Salam, “I will gift you the Book and Hikmat (wisdom). Then a Rasul will arrive to complete the truth of Kitab (books). You must believe on him and render service to him! Magnificent Allah Pak said, “Do you accept my commitment? Then Allah Pak said, “Be witnessed and I remain witnessed.” Ref: The sacred Al Imran Shareef: The sacred Verse Shareef-81

Besides the above Verse Shareef, the good news of arrival of Rahmatullil Alamin, Hudur Pak Swallallahu 
Alaihi wa Sallam has been given in many verse shareef. And the celebrating Eid at the occasion of His arrival is clearly declared in Quran Shareef-

Meaning: “Hey Mankind! Certainly, Almighty Allah Pak have sent to you the magnificent Nasihat Narrator, Healer of soul’s doubts, Hidayat Guidance for All, exclusive Peace bearer for Imandar (Believer) and Peace bearer for all (Noor-e-Mujassam Habeebullah Swallallahu Alaihi wa Sallam). O, my Habeeb Swallallahu Alaihi wa Sallam! Let them (Ummah) rejoice in the mercy (Book) and grace (Habeebullah Swallallahu Alaihi wa Sallam) of Allah Pak. It’s better than what they accumulate for the life and after life. Ref: The sacred Surah Yunus Shareef: Sacred Verse Shareef-57-58

It is mentioned in Tafsire Ruhul Mayani-141 page of 6th part, 
Meaning: Hadrat Abush Shaikh Rahmatullahi Alaihi describes from Hadrat Abdullah Ibn Abbas Rawdiallahu Ta’la Anhu, “Certainly, Fad’l (Grace) means Ilm (Knowledge) and Rahmat means the Noor-e-Mujassam Habeebullah Swallallahu Alaihi wa Sallam.

Hafiz-e-Hadith (hadith Memoriser), Imamul Mufassirin Jalaluddin Suyuti Rahmatullahi Alaihi explains the Verse Shareef mentioning Ibn Abbas Rawdiallahu Anhu-

Meaning: In the above verse, Certainly, Fad’l (Grace) means Ilm (Knowledge) and Rahmat means the Noor-e-Mujassam Habeebullah Swallallahu Alaihi wa Sallam! Such as- Allah Pak declares, “I have sent you as the Rahmat (mercy) of whole universe.” Ref: Tafswir-e-Durre Mansur, Tafswir-e-Ruhul Mayani, Tafswir-e-Kabir

Eid-e-Milade Habeebullah Swallallahu Alaihi wa Sallam is proved directly by the sacred Verse Shareef of Quran Shareef. Because, Magnificent Allah Pak Himself declares the arrival of His Habeeb Swallallahu Alaihi wa Sallam and Order to celebrate Eid on that Occasion. Subhanallah!
Not only that Magnificent Allah Pak have gifted the good news of the Milad Shareef of His Habeeb Swallallahu Alaihi wa Sallam through the past Nabi-Rasul Alaihimus Salam.

It is declared in the sacred Quran Shareef- “Hadrat Isa Alaihis Salam says, “Hey Bani Israyel! Certainly, I have sent to you as a Rasul. Confirming the Tawrat Shareef, I am the giver of good news of Rasul who will come after me and His Name would be Ahmad Swallallahu Alaihi wa Sallam. Ref: Sacred Surah As-Saf Shareef: Sacred Verse Shareef-6 

On the matter of this verse shareef, Hudur Pak Swallallahu Alaihi wa Sallam says on His own Milad shareef- “I will inform you some past information! That is- I am the supplication of Hadrat Ibrahim Alaihis Salam, the good news of Hadrat Isa Alaihis Salam and the good dream of My Mother! My Mother see a dream that a Noor Mubarak which illuminated the royal Palace of Syria during my Biladat (Birth) Shaan. Ref: Musnad-e-Ahmad-27 page of 4th Part, Mustadarak-e-Hakim-601 page of 2nd part, Mishqat Shareef-513 pages.

We saw from above Verse shareef, Magnificent Allah Pak has given the good news of Eid-e-Milad-e-Habeebullah Swallallahu Alaihi wa Sallam through Hadrat Isa Alaihis Salam and Hudur Pak Swallallahu Alaihi wa Sallam Himself describes His Milad Shareef. Subhanallah!

Magnificent Allah Pak declares in the sacred Quran Shareef- “Remember the Niamat (favor) that you have given.” Ref: Sacred Surah Al Imran Shareef: Sacred Verse Shareef-103

Magnificent Allah Pak declares- “Express the Niamat (favor) of your Rab.” Ref: Sacred Surah Adduha Shareef: Sacred Verse Shareef-11.
It is mentioned in Hadith Shareef in the explanation of above Niamat- 
“Sear to Allah! They (who opposed) are the Qurayeesh Kafeer and Hadrat Saiyiduna Muhammad Swallallhu Alaihi wa Sallam is the Niamat of Him.” Ref: Bukharee Shareef-1/221  

And it is declared in the sacred Quran Shareef about commemorating or discussing the Niamat day-
Meaning: “Bring out your people from darkness into the light and remind them of the days of Allah." Indeed, there are signs for everyone patient and grateful persons. Ref: Sacred Surah Ibrahim Shareef: Sacred Verse Shareef-5

Commemorating the special day and expressing happiness on the day is proved directly from the Sacred Quran Shareef by the above sacred verse shareef.
So, celebrating Eid, Discussing on Him on the arrival of Hudur Pak Swallallahu Alaihi wa Sallam is proved irrefutably from sacred Quran Shareef. Subhanallah!