Eid al-Adha also called the "Festival of the Sacrifice", is the second of two Islamic holidays celebrated worldwide each year (the other being Eid al-Fitr), and considered the holier of the two. It honours the willingness of Ibrahim (Abraham) to sacrifice his son as an act of obedience to God's command. But, before Ibrahim could sacrifice his son, God provided a lamb to sacrifice instead. In commemoration of this intervention, an animal, usually a sheep, is sacrificed ritually and divided into three parts. One share is given to the poor and needy, another is kept for home, and the third is given to relatives.
In the Islamic lunar calendar, Eid al-Adha falls on the 10th day of Dhu al-Hijjah, and lasts for four days. In the international (Gregorian) calendar, the dates vary from year to year shifting approximately 11 days earlier each year.
During Eid al-Adha, distributing meat amongst the people, chanting the takbir out loud before the Eid prayers on the first day and after prayers throughout the three days of Eid, are considered essential parts of this important Islamic festival.
Men, women, and children are expected to dress in their finest clothing to perform Eid prayer in a large congregation in an open waqf ("stopping") field called Eidgah or mosque. Affluent Muslims who can afford it sacrifice their best halal domestic animals (usually a cow, but can also be a camel, goat, sheep, or ram depending on the region) as a symbol of Abraham's willingness to sacrifice his only son. The sacrificed animals, called aḍḥiya (Arabic: أضحية), known also by the Perso-Arabic term qurbāni, have to meet certain age and quality standards or else the animal is considered an unacceptable sacrifice. In Pakistan alone nearly ten million animals are slaughtered on Eid days costing over US$2.0 billion.
The meat from the sacrificed animal is preferred to be divided into three parts. The family retains one-third of the share; another third is given to relatives, friends, and neighbors; and the remaining third is given to the poor and needy.
Muslims wear their new or best clothes. Women cook special sweets, including ma'amoul (filled shortbread cookies). They gather with family and friends.
Eid al-Adha celebrated all over Bangladesh. People can join Main Eid Jamat at Baitul Mukarram Mosque at Paltan. Also people can take Salat at Jatio Eidgah.