I say, and with God's success: He is someone who has a continuous urinary incontinence that he cannot control, or a chronic diarrhea, or a constant passing of wind, or a persistent nosebleed, or a wound that does not heal, or others. Thus, a time of obligation does not pass him except that he is in a state of ritual impurity. Refer to: Sharh Al-Waqaya p. 129, Al-Maraqi p. 149, Al-Hadiyya Al-Alaiyya p. 46, and others. And God knows best.