Zaid b. Thabit (Allah be pleased with him) reported Messenger of Allah ﷺ granting concession in case of 'ariyya transactions and that implies selling of (dry dates for fresh dates) according to a measure. (Using translation from Muslim 1539h)   

أَنَّ رَسُولَ اللهِ ﷺ رَخَّصَ فِي الْعَرَايَا تُبَاعُ بِخَرْصِهَا  

the Messenger of Allah granted a concession allowing 'Araya sales for dried dates by estimation. (Using translation from Nasāʾī 4539)  

أَنَّ رَسُولَ اللهِ ﷺ رَخَّصَ فِي بَيْعِ الْعَرِيَّةِ بِخَرْصِهَا تَمْرًا