Shiavault - a Vault of Shia Islamic Books Uyun Akhbar Ar-Ridha Volume 2 Chapter 58: On What Ar-Ridha’ (a.s.) told his Brother Zayd ibn Musa When Zayd was Being Haughty in Al-Ma’mun’s Presence and What Ar-Ridha’ (a.s.) said About Mistreating the Shiites 58-1 Muhammad ibn Ahmad al-Sinani narrated that Muhammad ibn Abi Abdullah al-Kufi quoted on the authority of Abul Faydh Salih ibn Ahmad, on the authority of Sahl ibn Ziyad, on the authority of Saleh ibn Abi Hammad, on the authority of Al-Hassan ibn Musa ibn al-Vosha’ al-Baghdadi, “I was with Ali ibn Musa Ar-Ridha’ (a.s.) in his meeting in Khorasan where Zayd ibn Musa (Imam Ar-Ridha’’s brother) was present and was haughty with those present saying that we (meaning the offspring of Imam Musa Al-Kazim (a.s.)) are such and such.