Church official's bag is brown, full of rupees (9)
I believe the answer is:
sacristan
'church official's' is the definition.
(type of church official)
'bag is brown full of rupees' is the wordplay.
'bag' becomes 'sac' (a small bag).
'brown' becomes 'tan' (tan is a kind of brown).
'full of' indicates putting letters inside.
'rupees' becomes 'r' (abbreviation for rupees).
'sac'+'is'+'tan'='sacistan'
'sacistan' enclosing 'r' is 'SACRISTAN'.
(Other definitions for sacristan that I've seen before include "Church official" , "Sexton" , "Church officer in charge of sacred objects" , "Church officer in charge of sacred vessels etc" , "Church worker" .)