Kazan is the capital of the Republic of Tatarstan in Russia. It is one of the largest economic, political, scientific, cultural and sports centers in Russia. The Kazan Kremlin, located in the city, is a UNESCO World Heritage site. Kurbun-bairam is one of the most important Muslim holidays. It follows a 30-day fast and involves early morning prayers at mosques, visiting cemeteries to pray for the dead, sacrificing a sheep with the meat donated to others, and visiting relatives while eating traditional foods. The story of Abraham and his son illustrates the origins of the Muslim holiday of sacrifice. God asked Abraham to sacrifice his son, but stopped him at