Surah Al-Muzzammil (The One wrapped in Garments) - Aya 6

Surah Al-Muzzammil (The One wrapped in Garments) - English - Aya 6 Aya count 20

إِنَّ نَاشِئَةَ ٱلَّيْلِ هِىَ أَشَدُّ وَطْـًۭٔا وَأَقْوَمُ قِيلًا ﴿٦﴾

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