Hazrat Ibn Abi Layla states that if a man marries a woman in exchange for a house, then the pre-emptor can take the price of the house.

Ibrahim says that if you owe a debt to someone and you do not know where he is or where his heirs are, then give charity on his behalf. After that, if he comes, give him the choice.

Hazrat Abdullah bin Hanish narrates that a man died and he had a debt, but the creditor did not know where he was. Hazrat Ibn Umar (may Allah be pleased with them both) ordered that an amount equal to the debt should be given as charity on his behalf.

Hasan says that when someone dies and has a debt, and it is not known where his heirs are, then that debt should be spent in the way of Allah. And if he is a Muslim and it is not known where his heirs are, then charity should be given on his behalf.

Hazrat Abu Wa'il narrates that Hazrat Abdullah (may Allah be pleased with him) bought a slave girl for seven hundred dirhams. The payment had not yet been made when the owner of the slave girl disappeared. Hazrat Abdullah (may Allah be pleased with him) continued to announce about her for a year. Then he went to the mosque and began to give her price in charity, while saying, "O Allah! This is on his behalf. If he comes, it will be from me and obligatory upon me." Then he said, "Do the same with every lost or abandoned thing."

Hazrat Muhammad bin Zaid says that I bought a slave girl from the khums. I found fifteen dinars with that slave girl. I took them to Hazrat Abdur Rahman bin Khalid bin Waleed, and he said that they belong to you.

Hazrat Sha'bi says that if a person buys a slave girl from the spoils of war and then finds silver with her, he should return it.

Hazrat Husain narrates that a man bought a slave girl from the spoils of war in the Battle of Qadisiyyah. The slave girl had some jewelry on her. That man went to Hazrat Sa’d bin Abi Waqqas (may Allah be pleased with him) and informed him about this. He said that the jewelry should be deposited into the Muslims’ spoils of war.

Hazrat Abu Abdullah Jasri says that I asked Hazrat Ma'qil bin Yasar, "One of us wants to buy a slave in order to set him free, so what method should he adopt?" He replied, "When you buy a slave with the intention of freeing him, do not mention freedom to his owner while buying him, rather buy him quietly. Then, if you wish, keep him, and if you wish, set him free."

Hazrat Ibn 'Ulayyah says that I mentioned the aforementioned hadith to Ayyub, so he said that the matter is not complete.