The Prophet ﷺ as saying: If anyone buys a slave who possesses property. his property belongs to the seller unless buyer makes a provision and if anyone buys palm-trees after they have been fecundated, the fruit belongs to the seller unless the buyer make a provision.  

عَنِ النَّبِيِّ ﷺ قَالَ مَنْ بَاعَ عَبْدًا وَلَهُ مَالٌ فَمَالُهُ لِلْبَائِعِ إِلاَّ أَنْ يَشْتَرِطَهُ الْمُبْتَاعُ وَمَنْ بَاعَ نَخْلاً مُؤَبَّرًا فَالثَّمَرَةُ لِلْبَائِعِ إِلاَّ أَنْ يَشْتَرِطَ الْمُبْتَاعُ  

Al-Zuhri and Nafi' differed among themselves in four traditions. This is one of them.  

عَنْ رَسُولِ اللَّهِ ﷺ بِقِصَّةِ الْعَبْدِ وَعَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ عَنِ النَّبِيِّ ﷺ بِقِصَّةِ النَّخْلِ  

The Prophet ﷺ said: If anyone buys a slave who possesses property, his property belongs to the seller unless the buyer makes a proviso.  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ بَاعَ عَبْدًا وَلَهُ مَالٌ فَمَالُهُ لِلْبَائِعِ إِلاَّ أَنْ يَشْتَرِطَ الْمُبْتَاعُ