Sahl ibn Sa’d (Allah be pleased with him) relates that a woman came to the Messenger of Allah (Allah bless him and grant him peace) and offered herself to him [for marriage]. He said, “I do not have any need for women right now.” A man said, “O Messenger of Allah, marry her to me!” He asked, “Do you have anything [to give as dowry]?” He replied, “I do not have anything.” The Messenger of Allah (Allah bless him and grant him peace) said, “Give something to her, even if only an iron ring.” He said, “I do not have anything.” So the Messenger of Allah (Allah bless him and grant him peace) asked, “Do you know any portion of the Qur’an?” He said, “Such-and-such.” He said, “I have married her to you for what you know of the Qur’an.” (Sahih al-Bukhari, no: 5141)