(86) باب بَيْعِ النَّخْلِ قَبْلَ أَنْ يَبْدُوَ صَلاَحُهَا
Narrated Anas bin Malik:
The Prophet (ﷺ) forbade the sale of fruits till their benefit is evident; and the sale of date palms till the dates are almost ripe. He was asked what 'are almost ripe' meant. He replied, "Got red and yellow."
Reference: Sahih al-Bukhari 2197
In-book reference: Book 34, Hadith 144
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 34, Hadith 402