Narrated Abu Huraira: The Prophet (PBUH) said, “Avoid the seven great destructive sins.” They (the people!) asked, “O Allah’s Apostle! What are they?” He said,

” (1) To join partners in worship with Allah;
(2) to practice sorcery;
(3) to kill the life which Allah has forbidden except for a just cause (according to Islamic law);
(4) to eat up usury (Riba),
(5) to eat up the property of an orphan;
(6) to give one’s back to the enemy and flee (running away / escaping) from the battle-field at the time of fighting
(7) and to accuse chaste women who never even think of anything touching chastity and are good believers.”

(Bukhari 8/840)

‘Abdullah b. Amr reported Allah’s Messenger (may peace be upon him) as saying: The whole world is a provision, and the best object of benefit of the world is the pious woman.

(Muslim 8/3465-Marriage Kitab Al Nikah)