And Qutaybah ibn Sa'id narrated to us, from Layth; and Ibn Rumh narrated to us, informing us from al-Layth, from Nafi', from Ibn 'Umar, that the Prophet, peace and blessings be upon him, said: "Whoever pollinates a palm tree and then sells its trunk, the fruit of the palm tree belongs to the one who pollinated it, unless the buyer stipulates otherwise."