Is it permissible for one suffering from obsessive-compulsive disorder (waswas) who has missed many prayers – the number of which he cannot ascertain – due to sometimes oversleeping past prayer times and disarray in his life, to make up the missed prayer immediately upon remembering it, or must he first arrange the missed prayers in order, knowing that the number of these missed prayers is estimated at two and a half months?

Wawasa (obsessive whispering/thoughts) is an illness that should be ignored, and abandoning prayer is a grave sin that must be avoided. Whoever has missed prayers must make them up in a way that does not harm their body or livelihood. The order between missed prayers is not obligatory, according to the preponderant opinion. If one fears missing the current prayer, they should begin with it, then make up as many of the missed prayers as they wish. It is permissible for someone afflicted with wawasa to adopt the lenient opinions.