Musannaf Ibn Abi Shayba 3:3262

Waki’ narrated to us, from Sharik, from Khusayf, from ‘Ikrimah, from Ibn ‘Abbas, that he used to say the takbir from the Dhuhr prayer on the Day of Sacrifice (Yawm al-Nahr) until the ‘Asr prayer of the last of the Days of Tashriq.