Bismillah Walhamdulillah Was Salaatu Was Salaam ‘ala Rasulillah

Narrated Jabir bin ‘Abdullah (Radi-Allahu ‘anhu):

Allah’s Apostle (Sallallahu ‘Alaihi Wa Sallam) said, “May Allah’s mercy be on him who is lenient in his buying, selling, and in demanding back his money.”

Bukhari Vol. 3 : No. 290