If a man touches the inner part of his anus or the inner part of his urethra, he must repeat his ablution; if he does so during prayer, he should interrupt the prayer, perform ablution, and repeat the prayer. Additionally, if he opens his urethra, he must redo his ablution and prayer. However, if someone uses an enema or carries something impure [such as filth], he is not required to redo his ablution even if it exits from him, unless it is mixed with feces, in which case he must perform istinja (cleaning the private parts) and redo the ablution.