Musnad Abu Ya'la al-Mawsili 160:180

Jubarah narrated to us, Abu Bakr al-Nahshali narrated to us, from Abdullah bin Sa'id, from his grandfather, Abu Hurairah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, Allah, the Almighty and Majestic, has creations that He spreads out under the night as He wills. So tie the waterskin, close the doors, and cover the vessel, for it does not open a door, nor does it uncover a covering, nor does it untie a knot."