Immediately after salam of the witr prayer1 du'a
Glory is to the King, the Holy.[Recite three times in Arabic, and raise and extend the voice on the ...
'سبحان الملك القدوس' ثلاث مرات والثالثة يجهر بها ويمد بها صوته 'ربِّ الملائكةِ والرّوح'
"Glory is to the King, the Holy.[Recite three times in Arabic, and raise and extend the voice on the third time and …"