Sahih Muslim 11049
In-book no 3772حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ بَاعَ نَخْلاً قَدْ أُبِّرَتْ فَثَمَرَتُهَا لِلْبَائِعِ إِلاَّ أَنْ يَشْتَرِطَ الْمُبْتَاعُ ".
Ibn Umar (Allah be pleased with them) reported Allah's Messenger (ﷺ) as saying: If anyone buys palm-trees after they have been fecundated the fruit belongs to the seller unless the buyer makes a proviso.