What is the ruling regarding the time limit for a man unable to perform intercourse due to castration or paralysis?

Chapter on the Term for the Impotent and the Castrated who is not amputated

Al-Mughni

Book of Marriage

Book 35 · Issue 3 · Bab 4

Open in Qurani

Primary text

If the incapacity results from castration (jabb) or paralysis (shalal), the option (for the wife to seek divorce/annulment) is established immediately. This is because intercourse is deemed hopeless, and therefore, waiting serves no purpose.