ʿUyūn akhbār al-Riḍā 1, narration 3

Translation

1-2 Ali ibn Ahmad ibn Muhammad ibn Imran ad-Daqqaq (ra) narrated that Muhammad ibn Abi Abdullah al-Kufi quoted on the authority of Sahil ibn Ziyad al-Adami, on the authority of Abdul Azeem ibn Abdullah Al-Hasani, on the authority of Sulaiman ibn Hafs al-Marwazy, he said: Musa ibn Ja'far ibn Muhammad ibn Ali ibn al-Husayn ibn Ali ibn Abi Talib (as) used to call his son Ali (as) "al-Rida." He would say, "Call my son al-Rida for me," "I said to my son al-Rida," and "My son al-Rida said to me." And when he addressed him, he would say, "O Aba al-Hasan."

Translation: Dr. Ali Peiravi — published with the edition, reproduced verbatim.