AL MUZZAMMIL — Ayat 6

إِنَّ نَاشِئَةَ اللَّيْلِ هِيَ أَشَدُّ وَطْءًا وَأَقْوَمُ قِيلًا

Indeed, the hours of the night are more effective for concurrence [of heart and tongue] and more suitable for words.