Narrated Abu Hurairah: "A man behaved in a rude manner while trying to collect a debt from the Messenger of Allah (ﷺ). So his Companions were about to harm him. The Messenger of Allah (ﷺ) said: 'Leave him, for indeed the owner of the the right has the right to speak.' Then he said: 'Purchase a camel for him and give it to him.' So they searched out but they did not find a camel but of a better ager than his camel. So he said: 'Buy it and give it to him. For indeed the best of you is the best in repaying.'"

Narrated Abu Rafi', the freed slave of the Messenger of Allah (ﷺ): "The Messenger of Allah (ﷺ) got a camel in advance. Some camels from the charity." Abu Rafi' said: "So the Messenger of Allah (ﷺ) told me to pay the man back for his camel. I said: 'I did not find among the camels but a superior selection of Raba'. The Messenger of Allah (ﷺ) said: 'Give it to him, for indeed the base of people is the best of them in repaying.'" This Hadith is Hasan Sahih.

Narrated Abu Hurairah: That the Messenger of Allah (ﷺ) said: "Indeed Allah loves tolerance in selling, tolerance in buying, and tolerance in repaying." He said: There is something on this topic from Jabir. This Hadith is Gharib. Some of them reported this Hadith from Yunus, from Sa'eed Al-Maqburi, from Abu Hurairah.

Narrated Jabir: That the Messenger of Allah (ﷺ) said: "Allah forgave a man who was before you: He was tolerant when selling, tolerant when purchasing, and tolerant when repaying." He said: This Hadith is Gharib Sahih Hasan from this route.

Narrated Abu Hurairah: That the Messenger of Allah (ﷺ) said: "When you see someone selling or buying in the Masjid then say: 'May Allah not profit your business.' And when you see someone announcing about something lost then say: 'May Allah not return it to you.'" The Hadith of Abu Hurairah is Hasan Gharib. This is acted upon according to some of the people of knowledge. They dislike selling and buying in the Masjid. This is the view of Ahmad and Ishaq. Some of the people of knowledge permitted selling and buying in the Masjid.