Is it permissible to call people to Islam in secret in a country where holding scholars' lessons is prohibited?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: My question is that I am from outside this country, so is it permissible to call people to Islam in secret in a country where scholars are prevented from delivering lessons for a long period?

Answer:
Do not set up a special place for yourself, but if you meet them in any place, convey the call to them in secret between you and them as much as possible. Yes. And if you set up a special place, they may spy on you and then arrest you. But if you use this method when meeting them in any place, seizing the opportunity between you and them, that is better, and it will not cause them to follow you. Yes.