Sahl bin Sa'd bin Malik · The Book of Marriage

Go, I have married her to you, and you teach her something of the Qur'an.

It was narrated from Ibn 'Abbas that the Messenger of Allah married Maimunah when he was a Muhrim.

"Also (forbidden are) women already married, except those (slaves) whom your right hands possess," meaning, this is permissible for you once they have completed their 'Iddah.

"The Messenger of Allah said: 'Whatever is given as a dowry, or gift or is promised her before the marriage belongs to her. Whatever is given after the marriage belongs to the one to whom it was given. And the most deserving for which a (man) is to be honored is (when marrying off) his daughter or sister.'" This is the wording of 'Abdullah (one of the narrators).