What to say immediately following the Witr prayer
The dua in its Arabic wording from Hisn al-Muslim, with its English meaning.
بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ
Bismillahir-rahmanir-raheem
Each dua: the Arabic, then a transliteration to help you say it aloud, then its meaning.
((سُبْحَانَ المَلِكِ القُدُّوسِ)) ثلاثَ مرَّاتٍ والثَّالِثَةُ يَجْهَرُ بها ويَمُدُّ بها صَوتَهُ يقولُ: [رَبِّ الْمَلاَئِكَةِ وَالرُّوحِ])).
(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).))
once
Source: Hisn al-Muslim by Saʿid ibn ʿAli ibn Wahf al-Qahtani. The Arabic is verbatim from the book; the English meaning is from the hisnmuslim.com English edition. The transliteration is generated by Waqtazan from the voweled Arabic as a reading aid — the Arabic and the recitation remain the reference. Virtues are quoted only from authentic hadith (al-Bukhari, Muslim, or graded sahih/hasan by al-Albani). Recitations: hisnmuslim.com.