Kur’an 73:6 — sura Al-Muzzammil, 6. ajet

إِنَّ نَاشِئَةَ ٱلَّيۡلِ هِيَ أَشَدُّ وَطۡـٔٗا وَأَقۡوَمُ قِيلًا

ta ustajanje noću, zaista, jače djeluje i izgovara se jasnije,

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