Sahih al-Bukhari 2048

Abd al-Aziz ibn Abd Allah narrated to us: Ibrahim ibn Sad narrated to us, from his father, from his grandfather, who said: Abd al-Rahman ibn Awf, may Allah be pleased with him, said: “When we arrived in Medina, the Messenger of Allah, peace and blessings be upon him, established a bond of brotherhood between me and Sad ibn al-Rabi. Sad ibn al-Rabi said, "I am the wealthiest of the Ansar, so I will divide my wealth equally with you. Look at my two wives, and whichever one you like, I will relinquish her to you; when she is free to marry, you may marry her." Abd al-Rahman said, "I have no need of that. Is there a market where trade is conducted?" He said, "The Qaynuqa market." Abd al-Rahman went there the next morning and returned with dried curds and clarified butter. He kept going there in the mornings, and before long Abd al-Rahman came with traces of yellow on him. The Messenger of Allah asked, "Have you married?" He said, "Yes." He asked, "Whom?" He said, "A woman from the Ansar." He asked, "What did you give as the bridal gift?" He said, "The weight of a date stone in gold, or a date stone of gold." The Prophet said to him, "Give a wedding feast, even if only with one sheep."”