Is it permissible to say "Allahu Akbar" (God is the Greatest) or "Sami'a Allahu liman hamidah" (Allah hears those who praise Him) aloud during prayer to alert to a slight harm without exiting the prayer?

It is permissible to raise one's voice with the takbir (Allahu Akbar) or by saying "Sami' Allahu liman hamidah (Allah hears those who praise Him)" to alert people to the prayer, or by saying "Subhan Allah (Glory be to Allah)." However, raising one's voice without need is not appropriate.