It was narrated that Jabir said: The Prophet commanded (us) to tie up our water skins and cover our vessels.
It was narrated that 'Aishah said: I used to cover three vessels for the Messenger of Allah at night: A vessel (of water) for his ablution, a vessel for his tooth stick and a vessel for his drink.
It was narrated that Ibn 'Abbas said: The Messenger of Allah never entrusted his purification to anyone nor his charity that he had given to anyone; he would be the one to take care of these matters himself.