Ruling on eating from the university canteen if the plates are not washed seven times after having been licked by dogs

In our university we have a canteen..very often its seen that the plates left over after having food are licked by dogs..the canteen staff wash the plates..but not 7 times they wash as they routinely do..what is the ruling to have food there in those plates when u know that the [;ate may have been licked by dog and the washing not followed as prescribed in sharriah?.

Praise be to Allaah.

Firstly:

Muslims narrated in his Saheeh (279) that Abu Hurayrah (may Allah be pleased with him) said: The Messenger of Allah (sa) said: “The purification of the vessel of one of you, if a dog licks it, is to wash it seven times, the first time with dust.”

An-Nawawi (may Allah have mercy on him) said: This clearly supports the view of ash-Shaafa‘i (may Allah be pleased with him) and others who say that dogs are najis (impure), because purification is only needed in the case of impurity. Continue reading