Visiting an innovator to greet him and call him to the truth

Question:
And the Messenger of Allah (peace and blessings be upon him) said, “They will ruin the people of the land and they are disliked by the people of the Sunnah and tawhid (the oneness of Allah).” Now, regarding staying out late at night, is it permissible for me to go to him and send him a message because of his staying out late? And should I say that to him?

Answer:
We command you that if he is among the others, and if your going to him is merely to greet him, sit with him, and chat, this is not permissible in this state. But if your going to him is to call him to Allah, order him to repent, and make him regret what has happened from him, then that is good. You visit him, greet him, call him to Allah the Exalted, and advise him. If he accepts from you, well and good. But if he does not accept, then you have fulfilled the obligation, and the proof has been established against him. Do not visit him after that as long as he remains upon this invalid methodology. Yes. And what about you?