"As for the thief, both male and female, cut off their hands. It is the reward of their own deeds, an exemplary punishment from Allah. Allah is Mighty, Wise." - Quran 5:38 (read more)

"Narrated Kurib: the freed slave of Ibn 'Abbas, that Maimuna bint Al-Harith told him that she manumitted a slave-girl without taking the permission of the Prophet. On the day when it was her turn to be with the Prophet, she said, "Do you know, O Allah's Apostle, that I have manumitted my slave-girl?" He said, "Have you really?" She replied in the affirmative. He said, "You would have got more reward if you had given her (i.e. the slave-girl) to one of your maternal uncles." - Sahih Bukhari 3:47:765 (read more)

"The Shafi´ites, Hanbalites and Malikites say: The verdict for the female apostate is the same as for the male. She must be called on to return to Islam for three days, prior to her death, for an evil-doer may have confused her understanding; thus the possibility exists for her being released from her confusion. Offering the apostate a time limit for repentance has been approved." - Abdurrahmani'l-Djaziri