The sale of fruits before their benefit is evident Sahih al-Bukhari 2195
Arabic hadith text
حَدَّثَنَا ابْنُ مُقَاتِلٍ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا حُمَيْدٌ الطَّوِيلُ، عَنْ أَنَسٍ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى أَنْتُبَاعَ ثَمَرَةُ النَّخْلِ حَتَّى تَزْهُوَ.قَالَ أَبُو عَبْدِ اللَّهِ يَعْنِي حَتَّى تَحْمَرَّ
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).