Does the repentant bear the sin of the one who bought music tapes from him and is still listening to them?

The dangers of unlawful earnings lie in helping people to sin. A merchant who provides forbidden audio materials is sinful by his action. However, it is hoped that for one who repents with sincere repentance, Allah will forgive what has passed, even if its effect remains. He must also call his former customers to repentance and to return to Allah Almighty.