good company and bad company

Al-Bukhari and Muslim
The Prophet (saw) said, "The similitude of good company and that of bad company is like that of the owner of a perfume shop and that of a blacksmith. The owner of the perfume shop would either offer you some
free of charge, or you would buy it from him, or you (at least) smell its
pleasant fragrance (from being around the shop); and as for the blacksmith,
(keeping his company) either burns your clothes or you smell a repugnant
smell"