Avoid the seven noxious things. (1) Associating anything with God, (2) magic, (3) killing one whom God has declared inviolate without a just cause, (4) devouring usury, (5) consuming the property of an orphan, running back from the battlefield and, (7) slandering chaste women who are believers but indiscreet.
Source: Sayings of Muhammad. by Prof. Ghazi Ahmad
Contributed by: Zaady