Do not buy fruit until its good condition becomes clear, and (the danger) of blight is no more. He said: Its good condition becoming clear implies that it becomes red or yellow.
Sahih Muslim Book 21, Hadith 64
← Previous Hadith Ibn 'Umar (Allah be pleased with them) reported that Allah's Messenger (ﷺ) forbade the sale of palm-trees (i. e. their trults) until the dates began to ripen, and ears of corn until they were white and were safe from blight. He forbade the seller and the buyer.

Sahih Muslim Book 21, Hadith 63 Next Hadith → This hadith is reported or the authority of Yahya with the same chain of transmitters up to" until its good condition becomes clear," but lie did not mention what follows (these words).

Sahih Muslim Book 21, Hadith 65