Sahih Bukhari Volume 005, Book 058, Hadith Number 274.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 58. Merits of the Helpers in Madina (Ansaar)
Narated By Anas : When 'Abdur-Rahman bin Auf came to Medina and the Prophet established the bond of brotherhood between him and Sad bin Ar-Rabi-al-Ansari, Saud suggested that 'Abdur-Rahman should accept half of his property and family. 'Abdur Rahman said, "May Allah bless you in your family and property; guide me to the market." So 'Abdur-Rahman (while doing business in the market) made some profit of some condensed dry yoghurt and butter. After a few days the Prophet saw him wearing clothes stained with yellow perfume. The Prophet asked, "What is this, O 'Abdur-Rahman?" He said, "O Allah's Apostle! I have married an Ansar' woman." The Prophet asked, "What have you given her as Mahr?" He (i.e. 'Abdur-Rahman) said, "A piece of gold, about the weight of a date stone." Then the Prophet said, Give a banquet, even though of a sheep."