Sahih Bukhari
Sales and Trade
Volume: 003 / Book Number: 034 / Hadith Number: 292
Narrated Abu Huraira:
The Prophet said, "There was a merchant who used to lend the people, and whenever his debtor was in straitened circumstances, he would say to his employees, 'Forgive him so that Allah may forgive us.' So, Allah forgave him."