Sayyiduna Sahl bin Sa'd (may Allah be pleased with him) narrates that a woman came to the Messenger of Allah (peace and blessings be upon him) and said: "O Messenger of Allah, I have come to give myself to you." The Messenger of Allah (peace and blessings be upon him) looked at her, cast his gaze over her from top to bottom, then he (peace and blessings be upon him) lowered his head. When the woman saw that he (peace and blessings be upon him) had made no decision about her, she sat down. Then a man from among his Companions stood up and said: "O Messenger of Allah, if you have no need of her, then marry her to me." He (peace and blessings be upon him) asked: "Do you have anything?" He said: "No." He (peace and blessings be upon him) said: "What do you know of the Qur'an?" He said: "Such-and-such surah." He (peace and blessings be upon him) said: "I have married her to you for what you have of the Qur'an."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5971