I p-prohibit the return of the holy man
I believe the answer is:
rabbi
'the holy man' is the definition.
(I've seen this in another clue)
'i p-prohibit the return' is the wordplay.
'p-prohibit' becomes 'b-bar' ('bar' said with a stutter like 'prohibit' was; to bar is to ban or prohibit).
'the return' says the letters should be written in reverse.
'i'+'bbar'='ibbar'
'ibbar' back-to-front is 'RABBI'.
'of' acts as a link.
(Other definitions for rabbi that I've seen before include "Jewish religious teacher" , "Teacher of Jewish law" , "Religious scholar" , "Blue" , "Jewish learned man" .)