Sa'id bin al-Musayyib (may Allah have mercy on him) said that the Prophet (peace and blessings be upon him) forbade "buying meat in exchange for an animal."
This is the correct version. Yazid bin Marwan al-Khallal narrated it from Malik, from al-Zuhri, from Sahl bin Sa'd, from the Prophet (peace and blessings be upon him), and erred in it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10570
Hadith Gradingمحدثین:حسن لغيره
Hadith Takhrij«حسن لغيره۔ اخرجه مالك 1335۔ الحاكم 2/141»