Lady Aisha (may Allah be pleased with her) narrates that the Noble Prophet (peace and blessings be upon him) fixed the land tax (kharaj) according to the period of time.

Sayyiduna Mukhlid bin Khafaf (may Allah be pleased with him) narrates that a slave was jointly owned by some people. Those people sold him, but one of the partners was absent. When he came, he refused to accept the transaction. Those people brought their case to Hisham bin Isma'il, so he ruled that the transaction would be annulled and that the sale should be made according to the rate of that day, and that the kharaj (revenue) should be collected. Then, the kharaj for the two years that had passed amounted to one thousand dirhams, so two slaves were sold in exchange for that slave. I went to the service of 'Urwah bin Zubair and mentioned this matter to him, so he said: Lady Aisha narrated this hadith to me: The Prophet (peace and blessings of Allah be upon him) ruled that the kharaj would be according to the period of possession. Then 'Urwah went to Hisham and informed him about this, so he annulled the transaction of those two slaves and abandoned the kharaj.

Hamzah bin Abdullah narrates from his father: At the time of the transaction, whatever is alive and gathered will be considered part of the buyer's property.

It is narrated about Talhah bin Yazid that he discussed with Sayyiduna Umar bin Khattab (may Allah be pleased with him) regarding some transactions (about their ruling), so Sayyiduna Umar (may Allah be pleased with him) said: I have not found for you anything with more allowance than what the Prophet (peace and blessings be upon him) gave to Hibban bin Munqidh. His eyesight was weak, so the Prophet (peace and blessings be upon him) permitted him to have the option to annul the transaction for three days, and if he was pleased, he could keep it, and if he did not like it, he could leave it.

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that Sayyiduna Safwan bin Munqidh was an elderly man, and he had an injury on his head. Because of this, the Noble Prophet (peace and blessings be upon him) gave him the option that in any transaction he made, he would have the right to cancel the deal within three days. There was some stammering in his speech, so the Noble Prophet (peace and blessings be upon him) told him: "When you sell, say that there will be no deception." Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) says: I heard him say that instead of the word "khalabah" he used to say "khazabah."

Sayyiduna Anas (may Allah be pleased with him) narrates that in the blessed time of the Prophet (peace and blessings be upon him), there was a man who used to buy and sell, but he had some mental weakness. Once, his family came to the Prophet (peace and blessings be upon him) and said: "O Messenger of Allah! Please stop so-and-so from making transactions, because he makes deals but he has some mental weakness." The Prophet (peace and blessings be upon him) called him and forbade him from making transactions. He said: "I cannot manage without buying and selling." So the Prophet (peace and blessings be upon him) said: "If you must buy and sell, then say: 'This is in exchange for that, and there will be no cheating.'"

The first narration is transmitted with another chain, however, in it the words are: The Noble Prophet (peace and blessings be upon him) said: "If you must engage in buying and selling, then say: This is in exchange for that, and no deception will be allowed." The narrator named Abdulwahab says: That is, people will not subject him to any loss.

Nafi’ reports that Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) informed him that there was an Ansari whose tongue had some stammering, and he would always incur a loss in transactions. He came to the Prophet (peace and blessings be upon him) and mentioned this matter to him. The Prophet said:“When you sell something, say twice: ‘There will be no loss.’”It is narrated about Sayyiduna Munqidh bin Amr that he had received a head injury, which affected his speech, and his mental state had also changed somewhat. He used to trade, and he would always incur a loss in business. He came to the Prophet (peace and blessings be upon him) and mentioned this matter to him. The Prophet said:“When you sell something, say: ‘There will be no loss.’ Then, for whatever goods you buy, you will have the right (of option) for three days. If after three days you are satisfied, keep it; and if you do not like it, return it to its owner.”This companion lived a very long life; he lived for one hundred and thirteen years. In the time of Sayyiduna Uthman (may Allah be pleased with him), when people had spread everywhere, their numbers had increased, and there was much trading in the market, he used to buy and sell in the market at that time.

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates this statement of the Noble Prophet (peace and blessings be upon him): "The option (of choice) remains for three days."

Hibban bin Wasi' narrates from his father, from his grandfather, that when Sayyiduna Umar was appointed as the Caliph, he said: "O people! I have considered this matter and I have found that among your transactions, the thing most similar to what was in the blessed time of the Prophet (peace and blessings be upon him) is the option (of choice), which the Prophet (peace and blessings be upon him) gave to Hibban bin Munqidh for three days, and this incident occurred regarding a slave."