Sunan an-Nasa'i 2512
سنن النسائي#2512Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ الْمُبَارَكِ، قَالَ حَدَّثَنَا وَكِيعٌ، عَنْ سُفْيَانَ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ عِيَاضِ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي سَرْحٍ، عَنْ أَبِي سَعِيدٍ، قَالَ كُنَّا نُخْرِجُ زَكَاةَ الْفِطْرِ إِذْ كَانَ فِينَا رَسُولُ اللَّهِ صلى الله عليه وسلم صَاعًا مِنْ طَعَامٍ أَوْ صَاعًا مِنْ شَعِيرٍ أَوْ صَاعًا مِنْ تَمْرٍ أَوْ صَاعًا مِنْ زَبِيبٍ أَوْ صَاعًا مِنْ أَقِطٍ .
It was narrated that Ibn 'Abbas said:"We used to pay Zakaul Fitr when the Messenger of Allah was among us; a Sa' of food, or a Sa' of barley, or a Sa' of dates, or a Sa' of raisins, or a Sa of cottage cheese
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: 23:78