Assalaamu'alaikum mufti sahib.
If a person peels a spot on the head from which pus and blood leak and forgets to clean it and then later performs wudhu and prays salah, is the salah valid due to having done masah on the head or should he clean the area of the spot and re pray his salah.
In the name of Allah, the most Beneficent, the most Merciful.
After peeling the spot from the head if the blood or puss did not spread to the other parts of your head and nor are there any traces of blood and puss then the wudhu and salah will be valid. (Nurul Idah p.114) However, if some puss or blood spread and you did wudhu without removing it then if the impurity is more than a size of a dirham (50p coin) then salah would not be valid. However, if it is less than a dirham it will be valid. (Hidayah p.74 v.1)
The next issue is whether such a salah be considered makruh or not. If a person knowingly left the impurity, which is less than a dirham on his clothes or body then it will be makruh otherwise his salah will be accepted without any detestability. (Nurul Idah p.170)
Only Allah Knows Best
Mohammed Tosir Miah
Darul Ifta Birmingham