Bismillah Walhamdulillah Was Salaatu Was Salaam ‘ala Rasulillah

As-Salaam Alaikum Wa-Rahmatullahi Wa-Barakatuhu

Narrated by Abu Musa(Radhiallaho anho):
Allah’s Messenger (sallallaahu ‘alaihi wasallam) said, “The example of a good companion (who sits with you) in comparison with a bad one, is I like that of the musk seller and the blacksmith’s bellows (or furnace); from the first you would either buy musk or enjoy its good smell while the bellows would either burn your clothes or your house, or you get a bad nasty smell thereof.”

Sahih Al-Bukhari Vol. 3 : No. 314