Musannaf Ibn Abi Shayba 3:3071

Abdah narrated to us, from Sufyan, from Makhul, from Muslim al-Batin, from Sa’id ibn Jubayr, from Ibn Abbas, that the Prophet, peace and blessings of Allah be upon him, used to recite in the dawn prayer on Friday: "Alif-Lam-Mim. The revelation..." (Surah As-Sajdah) And: "Has there not been over Man a period of time..." (Surah Al-Insan).