Hazrat Mahmool, the freed slave of Aal Ammarah, says that I sold two sheets to a man and made a condition that if you open one sheet, the sale of both will become binding. He opened one sheet, then he was not satisfied with the sale and came back to return them to me. I refused to take them back and took this case to Qazi Shurayh. He said, "It is your consent, not his, whereas a sale is based on mutual consent."

It is narrated from Hazrat Mak'hool that the Prophet صلی اللہ علیہ وسلم said: When a person buys something in such a way that he has not seen it and the item is absent from him, then after seeing it, he has the choice to take it if he wishes, and if he wishes, he may leave it.

Hazrat Harith says that if a person buys a specific quantity of wheat and then the traders look towards each other, even then the sale will remain valid. However, if an apparent defect is found, it can be annulled.

Hazrat Sha’bah says that I asked Hazrat Hakam and Hazrat Hammad: If someone bought a slave from someone yesterday and now wants to sell him today without having seen him, can he do so? They replied that on the same day he bought him, he cannot sell without seeing him.

Abu Hamza says that I asked Hazrat Ibn Abbas (may Allah be pleased with them) that my father is a trader of goats and sometimes he makes a Jew or a Christian his partner; is it correct to do so? He replied: Do not make a Jew, Christian, or Magian your partner. I asked the reason for this, so he said: They deal in usury, whereas usury is forbidden.

Hazrat Ata says: Do not enter into partnership with any Jew or Christian, do not let them pass in front of you during prayer, and if they do pass, they are like a dog (i.e., the prayer will be invalidated).

Hasan says that if a Muslim conducts buying and selling himself, there is no harm in making a Jew or a Christian a partner.

Hazrat Ibn Sirin says that do not give wealth to a dhimmi for mudarabah, but you may take wealth from him as mudarabah. When you pass by the collectors of zakat with this wealth, inform them that this wealth belongs to a dhimmi.

Hazrat Ata, Tawus, and Mujahid considered partnership with a Jew or Christian to be disliked, except if the buying and selling is done by a Muslim.

Hazrat Dahhak says that partnership with a polytheist is not permissible in farming and such matters in which he is absent, because in the religion of the polytheist, usury and the price of swine are lawful.