وَمِنَ اللَّيلِ فَتَهَجَّد بِهِ نافِلَةً لَكَ عَسىٰ أَن يَبعَثَكَ رَبُّكَ مَقامًا مَحمودًا

Spend part of the night in vigil, as a supplementary prayer, so that your Lord may elevate you to a commendable station.