Muezzin's call to prayer (4)
I believe the answer is:
azan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">muezzin's call to prayer</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 azan that I've seen before include "Muezzin makes this" , "Strong supporter" , "Muslim call to prayer" .)