Is it true that while you do wudu, if any drop of the water of your wudu (for example a drop from your hand or nose or face that you already washed in wudu) fall down inside your vessel from which u are doing the wudu you cannot use that water to wash the left part of the body like leg or head etc to complete the rest of the wudu? Means need to change the water.
This is baseless and there is No need to change the water.