How does a person afflicted with obsessive-compulsive disorder, hemorrhoids, and a fistula—from which purulent and bloody secretions emerge in varying quantities, necessitating the use of diapers—purify himself according to the Maliki school of thought? And when? And what should be done regarding prayer and touching the Qur'an, given the psychological and material hardship of washing the anus and changing the diaper before every prayer?