Sahih al-Bukhari 2195

Arabic

حَدَّثَنَا ابْنُ مُقَاتِلٍ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا حُمَيْدٌ الطَّوِيلُ، عَنْ أَنَسٍ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى أَنْ تُبَاعَ ثَمَرَةُ النَّخْلِ حَتَّى تَزْهُوَ‏.‏ قَالَ أَبُو عَبْدِ اللَّهِ يَعْنِي حَتَّى تَحْمَرَّ‏.‏

English translation

Narrated Anas:Allah's Messenger (ﷺ) forbade the sale of date fruits till they were ripe. Abu `Abdullah (Al-Bukhari) said, "That means till they were red (can be eaten)

Reference: Sahih al-Bukhari 2195, Book of Sales and Trade. English translation by Dr. Muhammad Muhsin Khan.