Musannaf Ibn Abi Shayba 3:3246

Abu Bakr ibn Ayyash narrated to us, from Yazid ibn Abi Ziyad, who said: I went out with Sa'id ibn Jubayr and Abd al-Rahman ibn Abi Layla, and they did not cease saying the takbir (Allahu Akbar) and commanding those who passed by them to say the takbir.