Narrated Abu Huraira: Allah's Apostle said, "If a man finds his very things with a bankrupt, he has more right to take them back than anyone else."

Narrated Jabir bin `Abdullah: A man pledged that his slave would be manumitted after his death. The Prophet asked, "Who will buy the slave from me?" Nu'aim bin `Abdullah bought the slave and the Prophet took its price and gave it to the owner.

Narrated Abu Hurairah (ra): Allah's Messenger (saws) mentioned an Israeli man who asked another Israeli to lend him money, and the latter gave it to him for a fixed period. (Abu Hurairah mentioned the rest of narration) [See chapter: Kafala in loans and debts. Hadith 2291]

Narrated Jabir: When `Abdullah (my father) died, he left behind children and debts. I asked the lenders to put down some of his debt, but they refused, so I went to the Prophet to intercede with them, yet they refused. The Prophet said (to me), "Classify your dates into their different kinds: 'Adha bin Zaid, Lean and 'Ajwa, each kind alone and call all the creditors and wait till I come to you." I did so and the Prophet came and sat beside the dates and started measuring to each his due till he paid them fully, and the amount of dates remained as it was before, as if he had not touched them.

(On another occasion) I took part in one of Ghazawat among with the Prophet and I was riding one of our camels. The camel got tired and was lagging behind the others. The Prophet hit it on its back. He said, "Sell it to me, and you have the right to ride it till Medina.'' When we approached Medina, I took the permission from the Prophet to go to my house, saying, "O Allah's Apostle! I have newly married." The Prophet asked, "Have you married a virgin or a matron (a widow or divorcee)?" I said, "I have married a matron, as `Abdullah (my father) died and left behind daughters small in their ages, so I married a matron who may teach them and bring them up with good manners." The Prophet then said (to me), "Go to your family." When I went there and told my maternal uncle about the selling of the camel, he admonished me for it. On that I told him about its slowness and exhaustion and about what the Prophet had done to the camel and his hitting it. When the Prophet arrived, I went to him with the camel in the morning and he gave me its price, the camel itself, and my share from the war booty as he gave the other people.

Narrated Ibn `Umar: A man came to the Prophet and said, "I am often betrayed in bargaining." The Prophet advised him, "When you buy something, say (to the seller), 'No deception." The man used to say so afterwards.

Narrated Al-Mughira bin Shu`ba: The Prophet said, "Allah has forbidden for you, (1) to be undutiful to your mothers, (2) to bury your daughters alive, (3) to not to pay the rights of the others (e.g. charity, etc.) and (4) to beg of men (begging). And Allah has hated for you (1) vain, useless talk, or that you talk too much about others, (2) to ask too many questions, (in disputed religious matters) and (3) to waste the wealth (by extravagance).