Does moving the forehead slightly during prostration, by moving the head twice during tasbih, invalidate tranquility and nullify the prostration?

Tranquility is achieved by the stillness of the limbs, even for a short time, and some scholars have defined its duration as equivalent to saying "Subhan Allah" (Glory be to Allah). The slight movement of a worshiper does not compromise tranquility or invalidate prostration, and therefore the prayer is valid. It is advised to turn away from the whispers of Satan and not pay attention to them.