The word Eid occurs in the Koran in Sura Al Ma-idah verse 114. Eid means festivity happening repeatedly. When the disciples said: “O Jesus son of Mary, can your Allah Send down upon us a table from heaven?”

He said: “Fear Allah if you are true believers.”

‘They said: “We wish to eat from it so that our hearts are at peace, and we know that you have spoken the truth to us, and we be witnesses thereof”; said Jesus son of Mary: “O Allah our Lord, send down upon us a table from heaven, and it shall be a feast-day (Eid) for first and last among us, and a miracle from you, and grant us your bounty—you are the best of providers.”

(Koran, 5: 114 source: Koran, A new translation by Tarif Khalidi, Penguin Classics)

The festival of Eid ul-Adha is celebrated in the remembrance of the sacrifice of Ismail by his father Ibrahim. Ibrahim saw a dream to sacrifice then his 13-year-old only son Ibrahim from his wife Hagir. Ibrahim interpreted the dream as the command of Allah and both his wife and his son promptly agreed. Sura Saffat, verse 102 in Koran says the following: 

He said: ‘I shall go to my Lord and he shall guide me. My Lord, grant me a virtuous progeny.’

And We gave him glad tidings of a wise and forbearing son.

When the son was old enough to accompany him, he said:

‘My son, I saw in a dream that I was sacrificing you, so reflect and give me your opinion.’

He said: ‘Father, do as you are commanded and you shall find me, Allah willing and steadfast.’

When both submitted to the will of Allah, he bent his head down and on its side.

And We called out to him: ‘O Ibrahim, you have made your vision come true.’

Thus We reward the virtous.

That was indeed a conspicuous ordeal.

And We ransomed him with a mighty sacrifice,

And conferred honor upon him among the later generations.

(Koran, 37:102)

Thus Ibrahim took his son to Mina and a Satan tried to interfere but he did not listen. Seeing his father distressed Ismail asked his father to tie his hand and blindfold his eyes and sharpen the knife so that his son does not feel the pain. Ibrahim did the same but after opening his eyes found that his son was alive. Allah made the actions of Ibrahim and his family compulsory and appropriate for all Muslims.

The story is impressive and it differentiates all Muslims from non-Muslims. The Eid ul-Adha is a pious day for all Muslims. There collectivism has a lot of meaning so has Muslim Brotherhood. Only problem with Muslims is the violence from some extremists in the form of jihad meant for external purpose, otherwise the rest of the world should happily accept the complete surrender and devotion of Muslims to Allah as positive.