Musnad Ahmad 2036

Moosa bin Muslim at Tahhan as-Sagheer narrated: I heard ‘Ikrimah attributing the hadeeth, as I think, to Ibn 'Abbas. He said: The Messenger of Allah (ﷺ) said: "Whoever leaves snakes alone out of fear of their pursuit is not one of us. We have not made peace with them since we fought them.”