Religious doctrine (5)
I believe the answer is:
dogma
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">religious doctrine</span>' is the definition.<br/ ><span class="explanation-format__explanation">(dogma is a kind of religious doctrine)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for dogma that I've seen before include "Go mad (anag.)" , "Inflexible principle" , "Doctrine accepted as true without proof" , "Code of belief" , "Laid-down doctrine" .)