Title: Why does Passing Gas Invalidate Wudu while Burping does not? Question: My question is regarding Wudu . Why does passing gas invalidate Wudu while burping does not? It seems like a similar body function. Thank you much. Regards, Mercedes Ansari USA Answer: As a principle, the Shari`ah requires us to renew our Wudu whenever we pass anything through the urinary or the fecal passage. It is, thus, not the nature of the excretion, but the passage through which the excretion has taken place, which invalidates the Wudu . Seen from the stated perspective, you shall see that there is no reason to group burping with those things, which invalidate the Wudu . I hope this helps. Regards, Moiz Amjad June 20, 2002