The company of a good friend is like an owner of musk; if you don’t buy anything, you will get the smell of it.
The company of a bad friend is like the blacksmith’s bellows; if you are not affected by its black dirt, you will be touched by its smoke. –Prophet Muhammed (saw)
The Prophet Muhammad (peace be upon him) said “That which is lawful is clear, and that which is unlawful is also quite clear. Between these two is that which is ambiguous, which most people do not know. One who avoids the doubtful safeguards his faith and his honor.”
——— Riyadh-us-Salaheen, Hadith 588.