Mukhtasar Bukhari (Abridged) 610 — It is disliked to abandon night

Narrated Abdullah bin Amr bin Al-As (may Allah be pleased with him): The Messenger of Allah (peace and blessings of Allah be upon him) once said to me: "O Abdullah! Do not be like so-and-so; he used to get up at night for prayer, then he abandoned getting up at night and praying."