1816 — Al-Hasan ibn Uthman informed us; Ahmad ibn Ja'far informed us; he said: Bishr ibn Musa narrated to us; he said: Mu'awiyah ibn Amr narrated to us; he said: Ishaq narrated to us; al-Awza'i narrated to us, saying: Yahya ibn Abi Kathir and Qatadah used to say, “Among all the deviant sects, there is none they feared more for this Ummah than Irja’.”