What is the remedy for one who suffers from obsessive doubts and uncertainty regarding ablution and prayer?

Question:
Our brother says: I am suffering from the problem of doubt regarding ablution. I repeat the ablution more than once for fear that the water did not reach all the limbs. Also, deep in my heart, if I read the images during prayer more than once, and sometimes I feel worries, sadness, and anxiety, so guide us to the best solution to overcome this state of mine. May Allah reward you with good.

Answer:
The questioner’s condition is a case of obsessive doubt and a psychological illness. We ask Allah for healing and well-being for us and for him. He should increase in the remembrance of Allah and seek refuge in Allah from Satan. He should abandon this matter, not pay attention to it, and not give it any heed, and it will go away, if Allah wills. However, if he interacts with it and gives it importance, the evil will increase upon him and the obsessive doubt will increase. But if he rejects it, abandons it, and does not pay attention to it, it will diminish for him, if Allah wills, until it disappears, along with seeking refuge in Allah from Satan and increasing in the remembrance of Allah. This is because the remembrance of Allah drives away Satan, and reciting the Qur'an is the greatest remembrance that drives away Satan. Satan only gains power over a person when he is heedless of the remembrance of Allah. For this reason, Allah named him, or described him, as a whispering retreater: a whisperer when a person is heedless of the remembrance of Allah, and a retreater when the Muslim remembers his Lord, Mighty and Majestic, for then he retreats and moves away. Yes.