Casting out money and Red Book (11)
I believe the answer is:
deuteronomy
'book' is the definition.
(I know that Deuteronomy is a book)
'casting out money and red' is the wordplay.
'casting' is an anagram indicator.
'and' is a charade indicator (letters next to each other).
'out'+'money'='outmoney'
'outmoney' after 'red' is 'redoutmoney'.
'redoutmoney' anagrammed gives 'DEUTERONOMY'.
(Other definitions for deuteronomy that I've seen before include "Fifth book of the Bible" , "Old cat in T.S.Eliot's" , "OT book" , "Book of the Old Testament" .)