4. [4/-] Rijal al-Najashi: From our Shaykh al-Mufid in his book “Masabih al-Nur”: reported to us Ibn Qulawayh from Ali b. al-Husayn b. Babawayh from Abdallah b. Ja’far from Dawud b. al-Qasim al-Ja’fari who said: I presented the book “Yawm wa Layla” of Yunus to Abi Muhammad al-Askari عليه السلام, so he said to me: who authored this? I said: it has been authored by Yunus the client of the family of Yaqtin, he said: may Allah give him for every letter a light on the day of judgment.