The sale called Al-Muzabana; which is the sale of dried dates for fresh ones (that are still on the trees), and dried grapes for fresh grapes and the sale called Al-‘Araya (i.e., the selling of ripe fresh date, still over the palms, by means of estimation, for dry dates). Sahih al-Bukhari 2183, 2184
Arabic hadith text
حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، حَدَّثَنَا اللَّيْثُ، عَنْ عُقَيْلٍ، عَنِ ابْنِ شِهَابٍ، أَخْبَرَنِي سَالِمُ بْنُ عَبْدِ اللَّهِ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ ـ رضى الله عنهما ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ "لاَ تَبِيعُوا الثَّمَرَ حَتَّى يَبْدُوَ صَلاَحُهُ، وَلاَ تَبِيعُوا الثَّمَرَ بِالتَّمْرِ " قَالَ سَالِمٌ وَأَخْبَرَنِي عَبْدُ اللَّهِ، عَنْ زَيْدِ بْنِ ثَابِتٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم رَخَّصَ بَعْدَ ذَلِكَ فِي بَيْعِ الْعَرِيَّةِ بِالرُّطَبِ أَوْ بِالتَّمْرِ، وَلَمْ يُرَخِّصْ فِي غَيْرِهِ
Translation
Narrated `Abdullah bin `Umar
Allah's Messenger (ﷺ) said, "Do not sell fruits of dates until they become free from all the dangers of being spoilt or blighted; and do not sell fresh dates for dry dates." Narrated Salim and `Abdullah from Zaid bin Habit' "Later on Allah's Messenger (ﷺ) permitted the selling of ripe fruits on trees for fresh dates or dried dates in Bai'-al-'Araya, and did not allow it for any other kind of sale."