31. If you avoid the great sins[2] which you are forbidden to do, We shall expiate from you your (small) sins, and admit you to a Noble Entrance (i.e. Paradise).
____________________
(V.4:31) Narrated Abu Hurairahرضي الله عنه: The Prophet صلى الله عليه وسلمsaid: "Avoid the seven great destructive sins." They (the people) asked, "O Allâh’s Messenger! What are they?" He said, "(1) To join partners in worship with Allâh, (2) to practise sorcery; (3) to kill a person which Allâh has forbidden except for a just cause (according to Islâmic law); (4) to eat up Ribâ * (usury); (5) to eat up the property of an orphan; (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 their chastity and are good believers." (Sahih Al-Bukhâri Vol.8, Hadîth No.840).
* (see the Glossary Appendix l)