How can one advise a stranger to stay away from prevalent sins, such as listening to music, in an indirect and gentle manner that does not embarrass him or alienate him from religion, taking into consideration the circumstances of a society far removed from religiosity?

The methods of initiating speech to invite people and remind them vary according to the individuals and situations, for the wise person addresses each individual in a manner suitable to them. When seeing someone committing a reprehensible act, such as music, one can start with a greeting of peace, a smile, introducing oneself, and asking for their name as an entrance to acquaintance. Then say to them: "You are upon goodness and the signs of righteousness appear upon you, and I wish good for you, and for that reason, I wished to remind you of the words of the scholars regarding the prohibition of this thing you are doing. If you were unaware of the ruling of the Shari'ah, then there is no sin upon you for what has passed, but adhere to it in the future," and supplicate for their success. If you fear harm or the occurrence of a greater evil, you may refrain from denouncing it.