A man went to Ibn 'Aqeel and said, "Whenever I plunge myself two to three times into a river to take a bath, I am not sure whether the water reached every part of my body, and am consequently unsure whether I have purified myself. What should I do?" He said "Do not pray." "Why do you say that?" Ibn 'Aqeel answered: "Allah's messenger [pbuh] said, 'The pen is lifted from three: from the child until he reaches adulthood, from the one who is sleeping until he wakes up, and from the insane man until he regains his senses.' And whoever plunges himself into a river once, twice and then three times, yet still feels that he has not taken a bath is insane."