Should a mother complete her prayer or repeat it if her young son urinates on her while she is in the Tashahhud?

A child's urine is impure in all cases. However, for a child who has not yet eaten solid food, it suffices to sprinkle water (nadh) on the affected area. If the child has started eating solid food, then the urine must be washed off.

Accordingly, if a mother's garment is soiled by her son's urine during prayer, she should remove the garment and continue her prayer if her 'awrah (private parts) are covered and the urine has not touched her body. However, if she is unable to do so, or if the urine has touched her body, she must interrupt her prayer, remove the impurity, and then restart her prayer.