The two passages are the urinary and anal outlets. Anything actually passing out from them falls under this general rule, whether urine, stool, wind or another substance.
The determining factor is discharge from the specified route. Mere uncertainty that discharge may have occurred is not the same as confirmed emergence.
Opening interactive controls...
Invalidators of Wudu: Actual and Constructive Causes
The two passages are the urinary and anal outlets. Anything actually passing out from them falls under this general rule, whether urine, stool, wind or another substance.
The determining factor is discharge from the specified route. Mere uncertainty that discharge may have occurred is not the same as confirmed emergence.