Sahih Muslim
The Book of Marriage (Kitab Al-Nikah)
Book Number: 008 / Hadith Number: 3317
This hadith has been narrated on the authority of Sahl b. Sa'd with a minor alteration of words, but the hadith transmitted through Za'idah (the words are that the Holy Prophet) said: Go, I have married her to you, and you teach her something of the Qur'an.