Abu Dawud Book 2, Hadith Number 1387.

Chapter : On fixing a part from the qran for daily recitation.

Narated By Ibn al-Had : Nafi’ b. Jubair asked me: In how many days do you recite the Qur’an? I said: I have not fixed any part from it for daily round. Nafi’ said to me: Do not say: I do not fix any part of it daily round, for the Apostle of Allah (PBUH) said: I recited a part of the Qur’an.

The narrator Ibn al-Had said: I think I have transmitted this tradition’ from al-Mughairah b. Shu’bah.