Muwatta Imam Malik Book of Business Transactions, Hadith 64
Yahya related to me from Malik from Zayd ibn Aslam from Said ibn al-Musayyab that the Messenger of Allah ﷺ forbade bartering live animals for meat.
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، أَنَّ رَسُولَ اللَّهِ