(63) باب السَّلَفِ فِي الثِّمَارِ
It was narrated that Abu Al-Minhal said:
"I heard Ibn 'Abbas say: 'When the Prophet came (to al-Madinah), they used to pay in advance for dates, two or three years in advance. He forbade them that and said: 'whoever pays in advance for dates, let him pay for a known amount or a known weight, to be delivered at a known time''' (AR)
Reference (AR): Sunan an-Nasa'i 4616 (AR)
In-book reference (AR): Book 44, Hadith 168 (AR)
English translation (AR): Vol. 5, Book 44, Hadith 4620 (AR)