Sunan an-Nasa'i, hadith 4636

أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ مَنِ ابْتَاعَ نَخْلاً بَعْدَ أَنْ تُؤَبَّرَ فَثَمَرَتُهَا لِلْبَائِعِ إِلاَّ أَنْ يَشْتَرِطَ الْمُبْتَاعُ وَمَنْ بَاعَ عَبْدًا وَلَهُ مَالٌ فَمَالُهُ لِلْبَائِعِ إِلاَّ أَنْ يَشْتَرِطَ الْمُبْتَاعُ ‏"‏ ‏.‏

It was narrated from Salim, from his father that the Prophet said:"Whoever buys a date-palm tree after it has been pollinated, its fruits belong to the seller, unless the purchaser has stipulated otherwise. And whoever buys a slave who has wealth, his wealth belongs to the seller, unless the purchaser has stipulated otherwise. "(sahih)