The Ruling on Sitting with a Sinner and Attending His Gathering

Question:
Is it permissible for us to sit with one who commits a sin, such as drinking alcohol, shaving the beard, or another sin, without one of us knowing that he has previously been affected by it, except that

Answer:
Also, if he is in the gathering of a tyrant, for example, previously you met him in a gathering and you all sat together at an invitation or at a… because this was not intended; you did not intend to gather with him, but he came and they were sitting at food or at an invitation.
There is no objection; this was not intended. The second matter is sitting with affection and love that is intended. If sitting with them has a benefit that affects him, and you advise him, then that is good. But if you do not rebuke him, and he does not even feel any dislike from you, then this is not permissible, because it means approving of what is wrong.
Except if his sitting with you reduces his evil, or leads to good. For example, if he prays and prays with you, that is good, because if he left, and everyone left, it would mean his evil is more severe, and he would increase in evil. His remaining with you, even if he is disobedient, has a benefit, to check his evil. It is not valid except in that case.