Musannaf Ibn Abi Shayba 1:1268

Abu Bakr narrated to us, he said: Abda bin Sulayman narrated to us, from Sa'id, from Qatada, who said: Ali was asked about a man who touches raw meat, and something from it gets on his hand. He said: There is nothing against him; he does not have to perform ablution if he touches it.