21) What is the name of the holy book in Islam?
22) What is the Muslim term for pilgrimage to Mecca?
23) In which year did the Prophet Muhammad (PBUH) receive his first revelations?
24) How many pillars does Islam have?
25) What is the name of the act of kneeling and touching one's forehead to the ground in prayer?
26) How many Surahs (chapters) are there in the Qur'an?
27) What is the most important pillar of Islam?
28) What is the name of Muhammad's wife and first female Muslim convert?
29) Who wrote the Qur'an?
30) What does 'Islam' mean in Arabic?