The religious duties of Muslims are called 5 pillars of Islam.
They consist of:
Shahadah: sincerely reciting the Muslim profession of faith.
Salat: performing ritual prayers in the proper way five times each day.
Zakat: paying an alms (or charity) tax to benefit the poor and the needy.
Sawm: fasting during the month of Ramadan.
Hajj: pilgrimage to Mecca.