Sayyiduna Sahl bin Sa’d (may Allah be pleased with him) narrates that we were sitting with some people when a woman said: O Messenger of Allah! I offer myself to you, please express your opinion about me. A man stood up and said: Marry her to me. The Prophet (peace and blessings of Allah be upon him) said: Go and look for something, even if it is an iron ring. The narrator says: He went and brought neither an iron ring nor anything else. The Prophet (peace and blessings of Allah be upon him) asked: Do you know any portion of the Qur’an by heart? He said: Yes! The narrator says: The Prophet (peace and blessings of Allah be upon him) married her to him in exchange for the portions of the Qur’an that he knew by heart.
Hadith Referenceالمنتقى ابن الجارود / كتاب النكاح / 716