Narrated Anas bin Malik: `Abdur-Rahman bin `Auf came (from Mecca to Medina) and the Prophet made a bond of brotherhood between him and Sa`d bin Ar-Rabi` Al-Ansari. Al-Ansari had two wives, so he suggested that `Abdur- Rahman take half, his wives and property. `Abdur-Rahman replied, May Allah bless you with your wives and property. Kindly show me the market. So `Abdur-Rahman went to the market and gained (in bargains) some dried yoghurt and some butter. After a few days the Prophet saw `Abdur-Rahman with some yellow stains on his clothes and asked him, What is that, O `Abdur-Rahman? He replied, I had married an Ansari woman. The Prophet asked, How much Mahr did you give her? He replied, The weight of one (date) stone of gold. The Prophet said, Offer a banquet, even with one sheep.