The Book of Drinks (Kitab Al-Ashriba)

Muslim :: Book 23 : Hadith 5000

Jabir b. 'Abdullah reported Allah's Messenger (may peace be upon him) as saying: Cover the vessels and tie the waterskin, for there is a night in a year when pestilence descends, and it does not pass an uncovered vessel or an untied waterskin but some of that pestilence descending into it.