(15) باب مَنْ بَاعَ نَخْلاً عَلَيْهَا ثَمَرٌ
Ibn Umar (Allah be pleased with them) reported Allah's Apostle (ﷺ) as saying:
Whosoever grafts the tree and then sells its roots, its fruit will belong to one who grafts it except when provision is laid down by the buyer.
Reference: Sahih Muslim 1543 c
In-book reference: Book 21, Hadith 102
USC-MSA web (English) reference(deprecated numbering scheme): Book 10, Hadith 3702