Musannaf Ibn Abi Shaybah 32687 — Reports on talk about rulers

Ibn Awn said: Among the people of Basrah, Muslim bin Yasar held a higher standing than al-Hasan al-Basri, until he hastened to join Ibn al-Ash'ath while the other held back. So Abu Sa'id al-Hasan al-Basri remained high in rank, and the standing of the other fell.