Ruling on gesturing with the hand to alert someone during the Friday sermon

Question:
I saw a man in one of the mosques during the sermon waking up the person next to him. Does he commit a sin?

Answer:
No, gesturing with the hand is not speech.
Q: Yes, it is with the hand?
A: There is nothing wrong with it. It is like someone who is talking, so you gesture to him to make him stop. Gesturing is permissible even in prayer, and prayer is greater. So if he gestures in prayer to someone who is moving forward or backward, there is nothing wrong with it.
Q: During the sermon, there are usually boys in the back rows. If you hear them talking, does he gesture to them?
A: He gestures to them. There is nothing wrong with it.