It is narrated from Sayyiduna Uthman bin Abi al-As (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him), while mentioning snakes, said: "Whoever fears (being harmed in) their revenge is not of me."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8312