صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
فصل في قيام الليل - ذكر البيان بأن من نام عن حزبه ثم صلى مثله ما بين الفجر والظهر كتب له أجر حزبه
Section on Night Prayer - Clarification that whoever misses his portion and makes it up between fajr and dhuhr gets the reward
1 hadith
Hadith 2643
Sayyiduna Umar bin Khattab (may Allah be pleased with him) narrates that the Prophet Muhammad (peace and blessings be upon him) said: "Whoever sleeps before performing his regular practice (wird) or something from it remains, then if he recites it between the Fajr prayer and the Zuhr prayer the next day, it will be recorded for him in his book of deeds just as if he had recited it at night."