﴿ وَمِنَ ٱلَّيْلِ فَتَهَجَّدْ بِهِۦ نَافِلَةًۭ لَّكَ عَسَىٰٓ أَن يَبْعَثَكَ رَبُّكَ مَقَامًۭا مَّحْمُودًۭا ﴾

“And rise from thy sleep and pray during part of the night [as well], as a free offering from thee, and thy Sustainer may well raise thee to a glorious station [in the life to come].”

(And some part of the night awake for it) to recite the Qur'an and to pray after sleeping a little, (a largess for thee) a merit for you; it is also said that this means: you alone are enjoined to do so. (It may be) and the expression 'may be' when used in connection with Allah means: it is a requisite (that thy Lord will raise thee to a praised estate) the station of intercession whereof you will be praised by the people of old and the people of new.