Imam Abdallah ibn Alawi al-Haddad (Allah have mercy on him) said,
Scrupulously avoid every prohibited thing, whether it be significant or not.
Among the mortal sins which necessarily lead one to the (Hell) Fire are magic, murdering the life which Allah has rendered sacrosanct except in the course of justice, adultery, fornication, homosexuality, the drinking of wine and all other intoxicants, riba, expropriating the property of an orphan, and severing family ties.
You should beware exceedingly of all these things, and of everything else which Allah has prohibited.
5th Feb 2010: Visit to Tarim, Hadramaut, Yemen