I give her to you in marriage for what you have of the Qur'an

The Prophet (may Allah's peace and blessings be upon him) was addressed with certain rulings that are unique for him and do not apply to others. Examples of these rulings include marrying the woman who gives herself to him in marriage without a dowry. One day, a woman came to the Prophet (may Allah's peace and blessings be upon him) and give herself in marriage to him, hoping to be one of his wives.

When he looked at the woman and did not feel any desire for her, he did not decline her request to avoid embarrassing her. He just turned away from her. When she sat down, a man said: "O Messenger of Allah, marry her to me if you do not want her." Since the dowry is obligatory in marriage, he said to the man: "Do you have anything to give her as a dowry?" He replied: "I have nothing but my lower garment/" If the man gave her his lower garment, he would have nothing to wear.

For this reason, the Prophet (may Allah's peace and blessings be upon him) said to him: "Look for something else even if it is an iron ring." So when he could not find anything, the Prophet asked: "Do you memorize anything of the Qur'an?" The man replied in the affirmative. So the Prophet (may Allah's peace and blessings be upon him) said: "I give her to you in marriage for what you have (memorized) of the Qur'an," i.e. teach her what you memorize and it will be her dowry.