وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ أَبِي الزِّنَادِ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، أَنَّهُ كَانَ يَقُولُ نُهِيَ عَنْ بَيْعِ الْحَيَوَانِ، بِاللَّحْمِ ‏.‏ قَالَ أَبُو الزِّنَادِ فَقُلْتُ لِسَعِيدِ بْنِ الْمُسَيَّبِ أَرَأَيْتَ رَجُلاً اشْتَرَى شَارِفًا بِعَشَرَةِ شِيَاهٍ فَقَالَ سَعِيدٌ إِنْ كَانَ اشْتَرَاهَا لِيَنْحَرَهَا فَلاَ خَيْرَ فِي ذَلِكَ ‏.‏ قَالَ أَبُو الزِّنَادِ وَكُلُّ مَنْ أَدْرَكْتُ مِنَ النَّاسِ يَنْهَوْنَ عَنْ بَيْعِ الْحَيَوَانِ بِاللَّحْمِ ‏.‏ قَالَ أَبُو الزِّنَادِ وَكَانَ ذَلِكَ يُكْتَبُ فِي عُهُودِ الْعُمَّالِ فِي زَمَانِ أَبَانَ بْنِ عُثْمَانَ وَهِشَامِ بْنِ إِسْمَاعِيلَ يَنْهَوْنَ عَنْ ذَلِكَ ‏.‏

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 ofa man buying an old camel for 10 sheep?' " Said said, "If he buys itto slaughter it, there is no good in it." Abu'z-Zinad added, "All thepeople (i.e. companions) that I have seen forbade bartering liveanimals for meat." Abu'z-Zinad said, "This used to be writtenin the appointment letters of governors in the time of Aban ibn Uthmanand Hisham ibn Ismail." Translation Not Available

Book Ref: Muwatta Imam Malik Book 31 Hadith 1358
Web Ref:  Muwatta Imam Malik Book 31 Hadith 66