Abu Dawud Book 36, Hadith Number 5240.

Narated By AbdurRahman Ibn AbuLayla : The Apostle of Allah (PBUH) was asked about the house-snakes. He said: When you see one of them in your dwelling, say: I adjure you by the covenant which Noah made with you, and I adjure you by the covenant which Solomon made with you not to harm us. Then if they come back, kill them.