"Whoever buys a palm tree that has been pollinated, its fruits belong to the seller, unless the purchaser stipulated a condition." (Sahih) Another chain from Ibn 'Umar, from the Prophet ﷺ, with similar wording.
أَنَّ النَّبِيَّ ﷺ قَالَ مَنِ اشْتَرَى نَخْلاً قَدْ أُبِّرَتْ فَثَمَرَتُهَا لِلْبَائِعِ إِلاَّ أَنْ يَشْتَرِطَ الْمُبْتَاعُ حَدَّثَنَا مُحَمَّدُ بْنُ رُمْحٍ أَنْبَأَنَا اللَّيْثُ بْنُ سَعْدٍ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ عَنِ النَّبِيِّ ﷺ بِنَحْوِهِ