﴿ وَمِنَ ٱلَّيْلِ فَٱسْجُدْ لَهُۥ وَسَبِّحْهُ لَيْلًۭا طَوِيلًا ﴾

“and during some of the night, and prostrate thyself before Him, and extol His limitless glory throughout the long night.”

and prostrate to Him for a portion of the night that is at after sunset maghrib and at night ‘ishā’ and glorify Him the length of the night perform supererogatory prayers during it as mentioned above for either two thirds a half or a third of it.