Qatada قتادة · The Book of al-Fara' and al-'Atirah

"I said: 'O Messenger of Allah, we used to offer sacrifices during the Jahiliyyah in Rajab, and eat of (their meat) and offer some to those who came to us.' The Messenger of Allah said: 'There is nothing wrong with that."' (One of the narrators) Waki bin 'Udus said: "I will not leave it."

during the campaign of Tabuk, the Prophet of Allah called for water from a woman. She said: "I only have a waterskin of mine made from an (unslaughtered) dead animal." He said: "Didn't you tan it?" She said: "Of course." He said: "Then it's tanning is its slaughter". (Daif)