Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrates: "When there is a dispute between the seller and the buyer and neither of them has any proof, then an oath will be taken from the seller, after which it is up to the buyer—if he wishes, he may proceed with the transaction, and if he wishes, he may leave it."

Abdul Malik bin Ubaidah narrates: I was present with Abu Ubaidah bin Abdullah when two men came to him. They made a transaction for something. One of them said: "I have bought this item for such and such amount." The other said: "I have sold it for such and such amount." So, Sayyiduna Abu Ubaidah said: A similar situation was presented before Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him), and he informed that I was present with the Prophet Muhammad (peace be upon him) when such a matter was brought before him. The Prophet (peace be upon him) instructed regarding the seller: "He should be made to swear an oath, then after that, the buyer will have the choice—if he wishes, he may take the item according to the seller's statement, and if he wishes, he may leave it."

Abdul Malik bin Jubair narrates: I was present with Abu Ubaidah, the son of Sayyiduna Abdullah bin Mas’ud, when two men came to him. They had made a transaction for something. One said, "I acquired this item for such and such an amount." The other said, "I sold this item for such and such an amount." So, Sayyiduna Abu Ubaidah informed that this case had been presented before Sayyiduna Abdullah bin Mas’ud (may Allah be pleased with him), and he had stated: I was present with the Prophet Muhammad (peace and blessings be upon him) when a similar case was brought before him. The Prophet gave this ruling regarding the seller: "He should take an oath, then after that, the buyer will have the choice—if he wishes, he may take it, and if he wishes, he may leave it." This narration is also present with another chain of transmission.

Abdur Rahman bin Qais narrates from his father, who conveys this message from his grandfather: Sayyiduna Ash'ath bin Qais bought a slave from among the slaves of khums from Sayyiduna Abdullah for twenty thousand dirhams. Sayyiduna Abdullah sent a message regarding its price, so he (Ash'ath) said: "I bought it for ten thousand dirhams." Then Abdullah said: "Name someone who can decide between you and me." So Sayyiduna Ash'ath said: "You yourself will decide between me and you." Then Sayyiduna Abdullah said: "I heard the Noble Prophet (peace and blessings be upon him) say: When there is a dispute between the two parties of a transaction and neither has any proof, then the statement of the owner of the goods will be accepted, or both should abandon the transaction."

The same narration is transmitted as a mawquf hadith with another chain of transmission.

Abdur Rahman narrates from his father: Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) sold a government slave for twenty thousand, that is, to Sayyiduna Ash'ath bin Qais. He brought ten thousand, so Sayyiduna Abdullah said: "I sold you for twenty thousand." Ash'ath said: "I did this for ten thousand; I am content with your decision regarding this." So Sayyiduna Abdullah bin Mas'ud said: "If you wish, I will narrate to you a hadith from the Prophet Muhammad (peace and blessings be upon him) regarding this." He said: "Alright." Ibn Mas'ud said: The Prophet Muhammad (peace and blessings be upon him) said: "When two men make a transaction and neither has any proof, then the statement of the seller is considered, then both should annul the transaction." So Sayyiduna Ash'ath said: "I annul this transaction."

Sayyiduna Abdullah (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings be upon him) said: "When there is a dispute between the two parties involved in a transaction, the statement of the seller will be considered valid, but if the item has been lost, then the statement of the buyer will be considered valid." The narrator of this narration, Hasan bin ‘Ammarah, is abandoned.

Qasim bin Abdur Rahman narrates from his father, from his grandfather (Sayyiduna Abdullah bin Mas'ud, may Allah be pleased with him), that the Prophet Muhammad (peace and blessings be upon him) said: "When there is a dispute between the two parties involved in a transaction regarding the deal, and the goods are still present in their original condition and have not perished, then the statement of the seller will be considered valid, or both of them will annul the transaction."

This narration is also transmitted through another chain of transmission.

This narration is also transmitted with another chain of transmission.