'Abdullah, don't be like so and so who observed prayer during the whole night and then abandoned it (altogether). (Using translation from Muslim 1159e)
قَالَ رَسُولُ اللهِ ﷺ «يَا عَبْدَ اللهِ لَا تَكُنْ مِثْلَ فُلَانٍ كَانَ يَقُومُ اللَّيْلَ فَتَرَكَ قِيَامَ اللَّيْلِ»