Maliks Muwatta Book 3, Hadith Number 40.
Section : The Umm al-Qur’an.
Yahya related to me from Malik from Abu Nuaym Wahb ibn Kaysan that he heard Jabir ibn Abdullah say, “Someone who prays a raka without reciting the umm al-Qur’an in it has not done the prayer except behind an imam.”