Abu Dawud Book 36, Hadith Number 5231.
Chapter : Not known.
Narated By Al-Abbas ibn AbdulMuttalib : Al-Abbas said to the Apostle of Allah (PBUH): We wish to sweep out Zamzam, but in it there are some of these Jinnan, meaning small snakes; so the Apostle of Allah (PBUH) ordered that they should be killed.