73:6
إِنَّ نَاشِئَةَ ٱلَّيْلِ هِىَ أَشَدُّ وَطْـًۭٔا وَأَقْوَمُ قِيلًا
Inn naashi'atal laili hiya ashadddu wat anw wa aqwamu qeelaa
Truly the rising by night is most potent for governing (the soul), and most suitable for (framing) the Word (of Prayer and Praise).