Is it necessary to perform a new ablution when in doubt about wiping the head and nothing is preponderant?

If you doubt your ablution after completing it, disregard the doubt. However, if you doubt it before completion—for example, if you wonder whether you wiped your head while you are washing your feet—then wipe your head and complete your ablution. But, if you are prone to frequent doubts, do not pay attention to that, and proceed based on your current state.