Abu Hurairah (May Allah be pleased with him) said: The Prophet (PBUH) said,

  ‘Avoid the seven destructive things.” It was asked: (by those present):

  ’What are they, O Messenger of Allah?” He replied,

 

  Associating anyone or anything with Allah in worship

  Practising sorcery

  Killing of someone without a just cause whom Allah has forbidden

  Devouring the property of an orphan

  Eating of usury

  Fleeing from the battlefield

  Slandering chaste women who never even think of anything touching chastity and are good believers.

                                                                     [Al-Bukhari and Muslim].