Idd-ul-Azha, also known as Eid al-Adha or the 'Sacrifice Feast', is one of the most significant annual holidays in Kenya. This holiday is a part of the Islamic tradition and is celebrated with great zeal and enthusiasm by the Muslim community in Kenya. It commemorates the willingness of Prophet Ibrahim (Abraham) to sacrifice his son in obedience to God’s command. But, God provided a lamb for the sacrifice in place of his son, this act of obedience towards God is celebrated as Idd-ul-Azha.

The holiday is celebrated on the 10th day of the last Islamic lunar month, known as Dhu-al-Hijjah. The date on the Gregorian calendar varies each year since the Islamic calendar is based on lunar cycles. The occasion starts with a special prayer in the mosques and then the sacrifice of an animal, usually a goat or a sheep. The meat from the sacrificed animal is traditionally divided into three parts. One third is consumed by the family, one third is given to relatives, friends or neighbours and the remaining third is distributed to the poor and the needy.

Despite being a Muslim holiday, it is a public holiday in Kenya, reflecting the country's rich cultural diversity. The holiday brings people together, fostering a sense of community and brotherhood. After the prayer and sacrifice, people engage in feasts and gatherings with their friends and family. Many people also take the time to give to the poor and needy, emphasizing the importance of charity in Islam. Thus, Idd-ul-Azha serves as a time of unity, self-reflection, and attaining spiritual growth.