73:6
Al-Muzzammil 6
Surah Al-Muzzammil (المزمل), verse 6 — reference 73:6. Arabic text with optional translation and free audio on Al-Qalam.
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.