A name in faith healing (3)
I believe the answer is:
ali
'a name' is the definition.
'in faith healing' is the wordplay.
'in' says the answer is hidden in the clue.
'ALI' is hidden within 'faith healing'.
(Other definitions for ali that I've seen before include "Champion of ring" , "Late boxer" , "Old fighter" , "Dickens novel" , "Mohammad . . ., . . . Hewson" .)