It is not permissible to swear by salaah (prayer) or by honesty

Ruling on one who thinks that sihr is OK so long as it does not cause any problems

The effect of sihr on the marital relationship

How to Get Rid of Sihr

Witchcraft coming Between a Man and His Wife

Islamic ruling on placing Islamic projects in the hands of non-Muslims

Is it permissible to give the reward of an action to someone who offered sacrifices to someone other than Allaah out of ignorance?

Jinn dwelling in humans

Bowing to anyone other than Allaah is haraam

How to deal with sihr (magic/witchcraft)