Sahih Bukhari

Narrated Sahl bin Sa`d:While we were sitting in the company of the Prophet (ﷺ) a woman came to him and presented herself (for marriage) to him. The Prophet (ﷺ) looked at her, lowering his eyes and raising them, but did not give a reply. One of his companions said, ""Marry her to me O Allah's Messenger (ﷺ)!"" The Prophet (ﷺ) asked (him), ""Have you got anything?"" He said, ""I have got nothing."" The Prophet (ﷺ) said, ""Not even an iron ring?"" He Sa`d, ""Not even an iron ring, but I will tear my garment into two halves and give her one half and keep the other half."" The Prophet; said, ""No. Do you know some of the Qur'an (by heart)?"" He said, ""Yes."" The Prophet (ﷺ) said, ""Go, I have agreed to marry her to you with what you know of the Qur'an (as her Mahr)