Religious tenet (5)
I believe the answer is:
dogma
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">religious tenet</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for dogma that I've seen before include "Fixed belief" , "Tenet" , "fixed opinion" , "Opinion viewed as truth?" , "Religious doctrine proclaimed as true without proof" .)