The ruling on greeting those sitting before praying the greeting of the mosque

Also, Hamad Mas'ud Fadl al-Sayyid from Sudan asks: Is it permissible to greet those sitting in the mosque before the greeting of the mosque? May Allah reward you with good?
Answer: Yes, if he enters the mosque and reaches the row, he says: Peace be upon you, before he begins the prayer. He says Peace be upon you to those present, even if they are praying. The one who is praying responds with a gesture, gesturing with his hand like one shaking hands, responding with a gesture as the Prophet (peace and blessings be upon him) did. Then he says the takbir for the greeting of the mosque and prays the greeting of the mosque. Yes.