Worshippers gather for prayers at the Moscow Cathedral Mosque, the main mosque in the Russian capital.
Men and boys typically take part in the day's prayers and rituals.
Meanwhile, in Russia's republic of Dagestan, a festive ram gets involved, too.
The celebration also marks the end of the annual Hajj pilgrimage to the holy city of Mecca, Saudi Arabia.
A woman pours tea in the city of Noyabrsk.
Generations come together to commemorate this special day.
The Imam typically leads prayers at the mosque.
In Russia's third-largest city of Novosibirsk, many came to pray.
Another wild ram appears, ready for sacrifice or not.
Festivities begin in Russia's republic of Tatarstan.
This day is seen as one of the holiest in Islam.
A feast usually follows prayers in the family home.
