River in which to find religious types (hard to miss) (5)
I believe the answer is:
indus
'river' is the definition.
(Indian river)
'in which to find religious types hard to miss' is the wordplay.
I cannot quite see how this works, but
'in' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for indus that I've seen before include "River flowing from Tibet to the Arabian Sea" , "Punjab river" , "Great river of South Asia" , "Pakistani river" , "running water" .)