“فَرَكْعَتَانِ فِي جَوْفِ اللّيْلِ كَنْزٌ مِنْ كُنُوْزِ الْبِرِّ، فَا سْتكْثِرْ مِنْ كُنُوْزِكَ لِيَوْمِ فَقْرِكَ، فَلَنْ تُغْنِيَ عَنْكَ كُنُوْزُ الدُّنْيَا إِِذَا مِتَّ.

Two rak'as in the depths of the night [before fajr] are among the treasures of piety, so augment your treasures for the day of your poverty, for the treasures of this world will be of no use when you die.”