It was narrated from Salim, from his father, that:

the Prophet forbade selling fresh dates still on the tree for dried dates. Ibn 'Umar said: "Azid bin Thabit narrated to me, that Allah's Messenger permitted that in the case o 'Ayaya"'

أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، أَنَّ النَّبِيَّ ﷺ نَهَى عَنْ بَيْعِ الثَّمَرِ بِالتَّمْرِ . وَقَالَ ابْنُ عُمَرَ حَدَّثَنِي زَيْدُ بْنُ ثَابِتٍ أَنَّ رَسُولَ اللَّهِ ﷺ رَخَّصَ فِي الْعَرَايَا .