No credit arranged in principle (8)
I believe the answer is:
doctrine
'principle' is the definition.
(thesaurus)
'no credit arranged' is the wordplay.
'arranged' is an anagram indicator.
'no'+'credit'='nocredit'
'nocredit' with letters rearranged gives 'DOCTRINE'.
'in' acts as a link.
(Other definitions for doctrine that I've seen before include "Church's policy" , "Set of religious principles" , "Guiding principle" , "System of beliefs" , "Dogma" .)