Yahya related to me from Malik from Abu'z-Zinad that Said ibn al- Musayyab said, "Bartering live animals for dead meat is forbidden." Abu'z-Zinad said, "I said to Said ibn Musayyab, 'What do you think of a man buying an old camel for 10 sheep?' " Said said, "If he buys it to slaughter it, there is no good in it." Abu'z-Zinad added, "All the people (i.e. companions) that I have seen forbade bartering live animals for meat."

Abu'z-Zinad said, "This used to be written in the appointment letters of governors in the time of Aban ibn Uthman and Hisham ibn Ismail."
Muwatta Malik Book 31, Hadith 66
← Previous Hadith 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."

Muwatta Malik Book 31, Hadith 65 Next Hadith → Malik said, "It is the generally agreed on way of doing things among us that the meat of camels, cattle, sheep and so on is not to be bartered one for one, except like for like, weight for weight, from hand to hand. There is no harm in that. If it is not weighed, then it is estimated to be like for like from hand to hand."

Malik said, "There is no harm in bartering the meat of fish for the meat of camels, cattle, and sheep and so on two or more for one, from hand to hand. If delayed terms enter the transaction however, there is no good in it."

Malik said, "I think that poultry is different from the meat of cattle and fish. I see no harm in selling some of it for something different, more of one than another, from hand to hand. None of that is to be sold on delayed terms."

Muwatta Malik Book 31, Hadith 67