The Book of Transactions
21/14. Chapter:
The prohibition of selling fresh dates in exchange for dry dates except in the case of 'Araya
Sahih Muslim
وَحَدَّثَنَاهُ ابْنُ الْمُثَنَّى، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، عَنْ عُبَيْدِ اللَّهِ، بِهَذَا الإِسْنَادِ وَقَالَ أَنْ تُؤْخَذَ بِخَرْصِهَا .
Ubaidullah reported this hadith with a slight change of words on the same authority (as quoted above).
Reference : Sahih Muslim 1539iIn-book reference : Book 21, Hadith 84USC-MSA web (English) reference : Book 10, Hadith 3685