Yahya related to me from Malik from Nafi from Abdullah ibn Umar from Zayd ibn Thabit that the Messenger of Allah, may Allah bless him and grant him peace, allowed the holder of an ariya to barter the dates on the palm for the amount of dried dates it was estimated that the palms would produce.
Muwatta Malik Book 31, Hadith 14
← Previous Hadith Yahya related to me from Malik from Abu'z-Zinad from Kharija ibn Zayd ibn Thabit that Zayd ibn Thabit did not sell fruit until the Pleiades were visible, at the end of May.

Malik said, "The way of doing things among us about selling melons, cucumbers, water- melons, and carrots is that it is halal to sell them when it is clear that they have begun to ripen. Then the buyer has what grows until the season is over. There is no specific timing laid down for that because the time is well known with people, and it may happen that the crop will be affected by blight and put a premature end to the season. If blight strikes and a third or more of the crop is damaged, an allowance for that is deducted from the price of purchase."

Muwatta Malik Book 31, Hadith 13 Next Hadith → Yahya related to me from Malik from Da'ud ibn al-Husayn from Abu Sufyan, the mawla of Ibn Abi Ahmad, from Abu Hurayra that the Messenger of Allah, may Allah bless him and grant him peace, allowed the produce of an ariya to be bartered for an estimation of what the produce would be when the crop was less than five awsuq or equal to five awsuq. Da'ud wasn't sure whether he said five awsuq or less than five.

Malik said, ''Ariyas can be sold for an estimation of what amount of dried dates will be produced. The crop is examined and estimated while still on the palm. This is allowed because it comes into the category of delegation of responsibility, handing over rights, and involving a partner. Had it been like a form of sale, no one would have made someone else a partner in the produce until it was ready nor would he have renounced his right to any of it or put someone in charge of it until the buyer had taken possession."

Muwatta Malik Book 31, Hadith 14