Hijra & Bond of Brotherhood

There is a narration in Sahih Bukhari in which Hazrat Abdur Rahman (ra) bin Auf relates that when he arrived in Medina, the Holy Prophet (sa) established a bond of brotherhood between him and Sa‘d (ra) bin Rabi‘. Upon this, Sa‘d (ra) bin Rabi‘ stated, “I am the wealthiest amongst the Ansar, therefore I shall give you half of my wealth and whichever of my two wives you like, I will separate from her for you. Once her iddat [a fixed period of time before a women can remarry] has passed, you can marry her.” Hazrat Abdur Rahman (ra) bin Auf replied to Hazrat Sa‘d (ra) bin Rabi‘ that Allah the Almighty may bless his family and wealth, but he did not require anything for all he needed to know from him was whether there was a marketplace where people could trade. Hazrat Sa‘d (ra) informed him that there was a marketplace of the Banu Qaynuqah.

Subsequently, early next morning, Hazrat Abdur Rahman (ra) bin Auf went there and carried out some trade and acquired some cheese and clarified butter as profit. He then returned to Hazrat Sa‘d (ra) bin Rabi‘’s house. Similarly, he went to the marketplace every morning and made profit from his trade.