The Messenger of Allah (ﷺ) forbade to sell spoils of war till they are appointed, and to sell palm trees till they are safe from every blight, and a man praying without tying belt.
Sunan Abi Dawud Book 23, Hadith 44
← Previous Hadith The Messenger of Allah (ﷺ) forbade selling palm-trees till the dates began to ripen, and ears of corn till they were white and were safe from blight, forbidding it both to the buyer and to the seller.

Sunan Abi Dawud Book 23, Hadith 43 Next Hadith → The Messenger of Allah (ﷺ) forbade the sale of fruits until they are ripened (tushqihah). He was asked: What do you mean by their ripening (ishqah)? He replied: They become red or yellow, and they are eaten.

Sunan Abi Dawud Book 23, Hadith 45