Qabasإِنَّ نَاشِئَةَ ٱلَّيۡلِ هِيَ أَشَدُّ وَطۡـٔٗا وَأَقۡوَمُ قِيلًا ٦
Inna nāshi'atal-layli hiya ashaddu wat'an wa aqwamu qīlā
Indeed, the hours of the night are more effective for concurrence [of heart and tongue]1780 and more suitable for words.1781
Footnotes
1780 Another accepted interpretation of the same words is "Indeed, arising at night is more difficult...," meaning that it will only be done by sincere believers and not others.
1781 i.e., for recitation of the Qur’ān and for hearing and understanding it.