It is narrated from Abu Bakr Siddiq (may Allah be pleased with him) through Ibn Abbas (may Allah be pleased with them both) that he disliked selling an animal in exchange for meat.
Hadith Referenceمسند الإمام الشافعي / كتاب البيوع / 1457
Hadith Takhrijاسناده ضعيف لضعف شيخ الشافعي اخرجه البيهقى 5 / 297 - وفي المعرفة السنن والآثار له (3380) وعبد الرزاق (14165)۔