The Id-ul-Azha commemorates the ordeal of Hazrat Ibrahim, who had Sbeen put to a terrible test by God when he was asked to sacrifice whatever was dearest to him and he decided to sacrifice the life of his son.
As he was on the point of applying the sword to his son's throat, it was revealed to him that this was meant only to test his faith, and it was enough, if instead he sacrifices only a ram in the name of Allah.
The first ten days of this month are very special. The nights of these ten days are the most loved times of the year. Muslims spend these nights performing additional prayers, reciting the Noble Qur'an, and offering supplications to the LORD. Many Muslims fast during these first nine days. Of course, those who have been blessed with it, are in Makkah, performing the Hajj.
This is celebrated on the tenth day of Zilhijja, when the Haj celebrations at Mecca are rounded off by the sacrifice of goats or camels. In India, too, goats and sheep are sacrificed all over the country and prayers are offered.