Only some of Mughal alphabet is permitted in Islam (5)
I believe the answer is:
halal
'islam' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?
'only some of mughal alphabet is permitted' is the wordplay.
'only some of' indicates the answer is hidden within the clue (I've seen 'only some' mean this).
'HALAL' is hidden within 'mughal alphabet permitted'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for halal that I've seen before include "specially-prepared meat" , "slaughter" , "authorised food" , "(Meat) from animals slaughtered according to Muslim law" , "OK for Muslims to eat" .)