Narrater: (Abu Al-Minhal) Hadidth No: (276)

I used to practice money exchange, and I asked Zaid bin Arqam about it, and he narrated what the Prophet said in the following: Abu Al-Minhal said, ''I asked Al-Bara' bin Azib and Zaid bin Arqam about practicing money exchange. They replied, We were traders in the time of Allah's Apostle and I asked Allah's Apostle about money exchange. He replied, If it is from hand to hand, there is no harm in it; otherwise it is not permissible.''