Religious OCD In Wuzu And Salah
You need to ignore your doubts. All you need is to wash your limbs normally. normal washing usually wash all parts, so need not to bother that something is left unwashed. this is all in imagination, nothing real. When doubts occur during prayer, you should based your prayer on conviction for example, if doubt is in 2 or 3 rakat, you should take it 2 and offer a sajda sahw at the end. if it bothers you a lot, then ignore your doubt and follow your original idea of rakaat.