Prayer: Following an Imam with Incontinence or a Mustahadah
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1438
If an imam of a congregational prayer suffers from an illness whereby he cannot control the discharge of urine or faeces [i.e. incontinence], it is permitted to follow him. Furthermore, a woman who is not a mustaḥāḍah is permitted to follow a woman who is a mustaḥāḍah.