(And Allah has said in Surah An-Nur:) "Do not compel your slave girls to prostitution if they desire chastity, in order that you may make a gain in the goods of this worldly life. And if anyone compels them, then surely Allah is Forgiving, Merciful to them after their compulsion."

Narrated Khansa' bint Khidam Al-Ansariya: That her father gave her in marriage when she was a matron and she disliked that marriage. So she came and (complained) to the Prophets and he declared that marriage invalid. (See Hadith No. 69, Vol. 7)