Ibn Mas'ud sold slaves to al-Ash'ath b. Qais. He then narrated the rest of the tradition to the same effect with some variation of words.
Sunan Abi Dawud Book 24, Hadith 97
← Previous Hadith Muhammad ibn al-Ash'ath said: Al-Ash'ath bought slaves of booty from Abdullah ibn Mas'ud for twenty thousand (dirhams. Abdullah asked him for payment of their price. He said: I bought them for ten thousand (dirhams). Abdullah said: Appoint a man who may adjudicate between me and you. Al-Ash'ath said: (I appoint) you between me and yourself. Abdullah said: I heard the Messenger of Allah (ﷺ) say: If both parties in a business transaction differ (on the price of an article), and they have witness between them, the statement of the owner of the article will be accepted (as correct) or they may annul the transaction.

Sunan Abi Dawud Book 24, Hadith 96 Next Hadith → The Messenger of Allah (ﷺ) as saying: There is the right of option regarding everything which is shared, whether a dwelling or a garden. It is not lawful to sell before informing one's partner, but if he sells without informing him, he has the greatest right to it.

Sunan Abi Dawud Book 24, Hadith 98