Which of the following is NOT a core tenant of Islam?
During the holy month of Ramadan, each Muslim must fast from dawn to sundown.
Charity should be given to the needy

There is only one God and Muhammad is his prophet.
Each Muslim must pray eight times a day, facing away from the holy city of Mecca.
possible, at least once in his or her life, each Muslim should undertake the Haaj: the pilgrimage to the holy city of Mecca,