What breaks wudhu? A Muslim cannot perform salah until they have performed wudhu. This leads into a common question one might ask: How long will my wudhu last for? The answer is that your wudhu remains until one (or more) of the following happens: Anything that is a natural discharge. This refers to urine, faeces, or passing wind Falling asleep Becoming unconscious Ejaculation If any of the above take place then you will need to perform wudhu again.