Muslim summons to prayer (4)
I believe the answer is:
azan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">muslim summons to prayer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for azan that I've seen before include "Strong supporter" , "Muezzin makes this" , "Muslim call to prayer" .)