Muwatta Malik 1322
موطأ مالك#1322SahihYahya related to me from Malik from Nafi from Abdullah ibn Umar that Umar ibn al-Khattab said, "Do not sell gold for gold except like for like, and do not increase one part over another part. Do not sell silver for silver except like for like, and do not increase one part over another part. Do not sell silver for gold, one of them at hand and the other to be given later. If someone seeks to delay paying you until he has been to his house, do not leave him. I fear rama for you." Rama is usury
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliMauquf Sahih
In-book reference: 31:33