English translation
3511. 'Abdur-Raḥmān bin Qais bin Muḥammad bin Al-Ash'ath narrated from his father, that his grandfather said: "Al-Ash'ath bought some of the slaves of the Khums from 'Abdullāh for twenty thousand. 'Abdullāh sent word to him asking for their price, and he said: 'I only bought them for ten thousand.' 'Abdullāh said: 'Choose a man to arbitrate between you and I.' Al-Ash'ath said: 'You yourself may arbitrate between you and I.' Abdullah said: 'I heard the Messenger of Allāh ﷺ say: "If the two parties to a transaction disagree, and there is no proof, then what the seller of the goods says is what counts, or they may cancel the transaction."'" (Hasan)
