It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever sells a tree in which dates have been pollinated, its fruit will belong to the seller, unless the buyer stipulates at the time of purchase (that he is buying the tree along with its fruit). And whoever sells a wealthy slave, his property will belong to his former master, unless the buyer stipulates otherwise."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 5491
Hadith Gradingحکم دارالسلام:حديث صحيح ، وهذا الإسناد على شرط الشيخين ، إلا أنه وهم عبدربه من سعيد في رفع القصتين عن نافع : قصة النخل وقصة العبد ...... والمحفوظ أن نافعارفع قصة النخل ووقف قصة العبد .