Maliks Muwatta Book 15, Hadith Number 3.
Section : About the Division of the Qur’an into Sections (Hizbs).
Yahya related to me from Malik from Dawud ibn al-Husayn from al-Araj from Abd ar-Rahman ibn Abd al-Qari that Umar ibn al Khattab said, “Whoever misses reading his hizb at night and reads it from when the sun has passed the meridian until the dhuhr prayer has not missed it, or it is as if he has caught it.”