Sahih Bukhari Volume 3, Book 38, Hadith Number 505A.

Narated By Sahl bin Sad : A woman came to Allah’s Apostle and said, “O Allah’s Apostle! I want to give up myself to you.” A man said, “Marry her to me.” The Prophet said, “We agree to marry her to you with what you know of the Qur’an by heart.”