Sahih al-Bukhari 2197
Sahih al-Bukhari · Book 34: Sales and Trade · The sale of date-palms before their benefit is evident
Narrated Anas bin Malik:
حَدَّثَنِي عَلِيُّ بْنُ الْهَيْثَمِ ، حَدَّثَنَا مُعَلًّى ، حَدَّثَنَا هُشَيْمٌ ، أَخْبَرَنَا حُمَيْدٌ ، حَدَّثَنَا أَنَسُ بْنُ مَالِكٍ ـ رضى الله عنه ـ عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ نَهَى عَنْ بَيْعِ الثَّمَرَةِ حَتَّى يَبْدُوَ صَلاَحُهَا، وَعَنِ النَّخْلِ حَتَّى يَزْهُوَ. قِيلَ وَمَا يَزْهُو قَالَ يَحْمَارُّ أَوْ يَصْفَارُّ .
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."