73:6
إِنَّ نَاشِئَةَ ٱلَّيْلِ هِىَ أَشَدُّ وَطْـًٔا وَأَقْوَمُ قِيلًا
inna nāshi-ata al-layli hiya ashaddu waṭan wa-aqwamu qīlan
Indeed, the hours of the night are more effective for concurrence [of heart and tongue] and more suitable for words.
— Saheeh International
Night prayer makes a deeper impression and sharpens words––
— M. A. S. Abdel Haleem
Verily, the rising by night (for Tahajjud prayer) is very hard and most potent and good for governing oneself, and most suitable for (understanding) the Word (of Allâh).
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali