Muwatta Malik 1354
موطأ مالك#1354SahihThese are the words of a Successor — the generation after the Companions — not of the Prophet ﷺ.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ دَاوُدَ بْنِ الْحُصَيْنِ، أَنَّهُ سَمِعَ سَعِيدَ بْنَ الْمُسَيَّبِ، يَقُولُ مِنْ مَيْسِرِ أَهْلِ الْجَاهِلِيَّةِ بَيْعُ الْحَيَوَانِ بِاللَّحْمِ بِالشَّاةِ وَالشَّاتَيْنِ .
Yahya related to me from Malik from Da'ud ibn al-Husayn that he heard Said ibn alMusayyab say, "Part of the gambling of the people of Jahiliya was bartering live animals for slaughtered meat, for instance one live sheep for two slaughtered sheep
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: 31:16