Q. I made Masah on a plaster on my hand. After I performed Salaah, I changed the plaster. Does my Wudhu remain valid?
A. In principle, Masah over a plaster/cast will remain valid until the wound etc. completely heals. In the process, if the plaster/cast is changed, it will not be necessary to repeat the Masah over the plaster/cast and the Wudhu will remain valid.
Upon the wound etc., completely healing, the Masah over the plaster/cast will not suffice and it will be necessary to wash the organ. (Jadeed Fiqhi Masaail 1/62)
Note: Masah over a plaster etc. will only be valid in the case of a valid Shari’ reason, for e.g. the wound etc. will not heal if the plaster is removed.
Allah Ta’ala Knows Best
Mufti Ismaeel Bassa
This answer was collected from TheMufti.com, which is a fatwa portal managed by Mufti Ismaeel Bassa from South Africa.