6. Ali ibn Muhammad has narrated from Sahl from those whom he has mentioned from Yunus from Bakkar ibn abu Bakr who has said the following:

“I once asked abu ‘Abd Allah , about the case of a mug with which one takes water from a large water container but one places it on a dirty place, then immerses it in the large water container. He (the Imam) said, ‘He must pour water on the mug three times and rub it.’”