Mishkat al-Masabih #2756

Ibn ‘Umar reported God’s Messenger as saying, “If anyone buys palm-trees after they have been fecundated the fruit belongs to the seller unless the buyer makes a proviso; and if anyone buys a slave who possesses property his property belongs to the seller unless the buyer makes a proviso." Muslim transmitted it and Bukhari transmitted something to the same effect as the first part alone.