(16) باب النَّهْيِ عَنِ الْمُحَاقَلَةِ وَالْمُزَابَنَةِ وَعَنِ الْمُخَابَرَةِ وَبَيْعِ الثَّمَرَةِ قَبْلَ بُدُوِّ صَلاَحِهَا وَعَنْ بَيْعِ الْمُعَاوَمَةِ وَهُوَ بَيْعُ السِّنِينَ
Jabir b. Abdullah (Allah be pleased with them) reported Allah's Messenger (ﷺ) forbidding Muzabana and Muhaqala, and Mukhabara, and the sale of fruits until they are ripe. I (the narrator) said to Sa'id (the other narrator):
What does ripening imply? He said: It meant that they become red or become yellow and are fit for eating.
Reference: Sahih Muslim 1536 g
In-book reference: Book 21, Hadith 111
USC-MSA web (English) reference(deprecated numbering scheme): Book 10, Hadith 3711