المزّمّل — Al-Muzzammil Ayat 6
اِنَّ نَاشِئَةَ الَّيْلِ هِيَ اَشَدُّ وَطْـًٔا وَّاَقْوَمُ قِيْلًاۗ
Inna nāsyi'atal-laili hiya asyaddu waṭ'aw wa aqwamu qīlā(n).
"Indeed, the hours of the night are more effective for concurrence [of heart and tongue] and more suitable for words."