Sunan an-Nasa'i 4545
سنن النسائي#4545Sahihأَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى، قَالَ حَدَّثَنَا مَالِكٌ، قَالَ حَدَّثَنِي عَبْدُ اللَّهِ بْنُ يَزِيدَ، عَنْ زَيْدِ بْنِ عَيَّاشٍ، عَنْ سَعْدٍ، قَالَ سُئِلَ رَسُولُ اللَّهِ صلى الله عليه وسلم عَنِ التَّمْرِ بِالرُّطَبِ فَقَالَ لِمَنْ حَوْلَهُ " أَيَنْقُصُ الرُّطَبُ إِذَا يَبِسَ " . قَالُوا نَعَمْ . فَنَهَى عَنْهُ .
it was narrated that Sa'd said:"The Messenger of Allah was asked about (buying) fresh dates with dried dates, and he said to those who were around him: 'Will fresh dates decrease (in weight or volume) when they dry out?" they said Yes,' so he forbade that
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 44:97