Musannaf Ibn Abi Shayba 13:1715

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Hammam narrated to us, from Qatadah, from Sa’id ibn al-Musayyib, who said: Umar said: "No one keeps the stray animal except a stray (misguided) person." And Ali said: "No one eats the stray animal except a stray (misguided) person."