The Prophet (ﷺ) said: If anyone buys a slave who possesses property, his property belongs to the seller unless the buyer makes a proviso.
Sunan Abi Dawud Book 24, Hadith 20
← Previous Hadith Al-Zuhri and Nafi' differed among themselves in four traditions. This is one of them.

Sunan Abi Dawud Book 24, Hadith 19 Next Hadith → The Messenger of Allah (ﷺ) as saying: None of you must buy in opposition to one another ; and do not go out to meet the merchandise, (but one must wait) till it is brought down to the market.

Sunan Abi Dawud Book 24, Hadith 21