What to say immediately following the Witr prayer

((سُبحَانَ المَلِكِ القُدُّوسِ)) ثلاثَ مرَّاتٍ والثَّالِثَةُ يَجهَرُ بها ويَمُدُّ بها صَوتَهُ يقولُ: [رَبِّ المَلاَئِكَةِ وَالرُّوحِ])).

Pronunciation

Subhanal malikil quddus.(three times).on the third time he would rayse his voice, elongate it and add: (Rabbil mala ikati warruh

English meaning

How perfect The King, The Holy One is.(three times) on the third time he would raise his voice, elongate it and add: (Lord of the angles and the Rooh (i.e. Jibra-eel).)