The Prophet (ﷺ) said, "Avoid the seven great destructive sins." The people enquired, "O Allâh's Messenger (ﷺ)! What are they?" He said, "(1) To join others in worship along with Allâh; (2) To practise sorcery; (3) To kill the life which Allâh has forbidden except for a just cause, (according to Islâmic law); (4) To eat up Riba (usury); (5) To eat up an orphan's wealth; (6) To show one's back to the enemy and fleeing from the battlefield at the time of fighting, and (7) To accuse chaste women, who never even think of anything touching chastity and are good believers." [4:28-O.B]