Abu Dawud Book 2, Hadith Number 1464.
Chapter : On the desirability of reciting the quran carefully.
Narated By Sa’d ibn Abu Waqqas : The Apostle of Allah (PBUH) said: He who does not chant the Qur’an is not one of us.
(Sub-narrator Qutaybah said: This Hadith according to my collection is on the authority of Sa’id ibn Abu Sa’id.)