أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " أَيُّمَا امْرِئٍ أَبَّرَ نَخْلاً ثُمَّ بَاعَ أَصْلَهَا فَلِلَّذِي أَبَّرَ ثَمَرُ النَّخْلِ إِلاَّ أَنْ يَشْتَرِطَ الْمُبْتَاعُ " .
It was narrated from Ibn 'Umar that the Prophet said: "Any man who pollinates a date-palm tree then sells it, the fruits of the tree are for the one who pollinated it, unless the purchaser stipulated otherwise." Translation Not Available
Book Ref: Sunan An Nisai Book 44 Hadith 4635
Web Ref: Sunan An Nisai Vol 5 Book 44 Hadith 4639