Sahih Muslim | Book 23 | Hadith Number 5000

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