'Abdullah, don't be like so and so who observed prayer during the whole night and then abandoned it (altogether).

قَالَ رَسُولُ اللَّهِ ﷺ يَا عَبْدَ اللَّهِ لاَ تَكُنْ بِمِثْلِ فُلاَنٍ كَانَ يَقُومُ اللَّيْلَ فَتَرَكَ قِيَامَ اللَّيْلِ