Musnad Ahmad 32:1033

Isma'il narrated to us, Humayd al-Tawil narrated to us, from Anas ibn Malik, who said: When Abd al-Rahman ibn Awf arrived in Medina, the Prophet, peace and blessings of Allah be upon him, established brotherhood between him and Sa'd ibn al-Rabi'. Sa'd said: "I will divide my wealth into two halves for you, and I have two wives, so I will divorce one of them, and when her waiting period ends, you marry her." He (Abd al-Rahman) said: "May Allah bless you in your family and your wealth. Show me the market." They showed him the market, so he went, and he did not return until he had with him some dried yogurt and ghee that he had gained as profit. The Messenger of Allah, peace and blessings of Allah be upon him, saw him after that with traces of yellow perfume on him, and he said: "What is this?" He said: "I have married a woman from the Ansar." He said: "What did you give her as a dowry?" He said: "A weight of gold equivalent to a date pit." (Humayd said: Or the weight of a date pit of gold). He said: "Give a wedding feast, even if with a sheep."