CHAPTER: Whoever Slept Through His Portion (Routine Of The Night Prayer).
Narrated Umar bin Al-Khattab: The Messenger of Allah صلی اللہ علیہ وسلم as saying: He who misses him daily round of recital or part of it due to sleep and he recites it between the dawn and the noon prayers, will be reckoned as if he recited it at night.