Abu Huraira reported the Messenger of Allah (ﷺ) to have said:When a dog licks a utensil belonging to any one of you, (the thing contained in it) should be thrown away and then (the utensil) should be washed seven times

This hadith has been transmitted by another chain of transmitters in which there is no mention of" throwing away

Abu Huraira reported:The Messenger of Allah (ﷺ) said: When a dog drinks out of a vessel belonging to any one of you, he must wash it seven times

Abu Huraira reported:The Messenger of Allah (ﷺ) said: The purification of the utensil belonging to any one of you, after it is licked by a dog, lies in washing it seven times, using sand for the first time

Hammam b. Munabbih reported:Of the a hadith narrated by Abu Huraira from Muhammad, the Messenger of Allah (ﷺ), one is this: The Messenger of Allah (ﷺ) said: The purification of the utensil belonging to one amongst you, after it is licked by a dog, lies in washing it seven times