Eid al-Adha is one of the great and important ceremonies of Muslims on the tenth day of Dhu al-Hijjah, which, unlike many Islamic ceremonies, has not been disputed and is considered to be the Eid for all Muslims.
The official holiday of Eid al-Adha in the Islamic calendar of the countries is from one to four days and people in different regions have different customs to do in this day but generally these ceremonies are the same.
Eid al-Adha in the commemoration of Abraham is celebrated by Muslims every year, in praise of him when he decided to sacrifice his son Ishmael purely to perform the divine command, and after he had passed the test by his willingness to carry out God's command, God gave them a sheep to be sacrificed instead of his son, Ismael.
According to the traditional customs of each region, the people starts to prepare for the celebration of Eid al- Adha by house cleaning, buying clothes and etc from several days before the Eid.
The preparations for the ceremony begin with purchase the victim's animal to sacrifice. On this day, People with every ethnicity and culture of different regions of Iran will go to the elders and the Hajji's houses to congratulate them after worship in Eid al-Adha prayer.