And Isḥāq ibn Ibrāhīm narrated to us, saying: Muḥammad ibn Bakr informed us, saying: Saʿīd ibn Abī ʿArūbah narrated to us. (Another chain:) And Abū Bakr ibn Abī Shaybah narrated to us, saying: ʿAffān narrated to us, saying: Abān al-ʿAṭṭār narrated to us. Both (chains) are from Qatādah, with this same chain of transmission. And in their narration, from the saying of the Prophet, peace and blessings be upon him, he said: "Indeed, Allah divided the Qur'an into three parts, and He made 'Say: He is Allah, the One' a part of the parts of the Qur'an."