Sunan Abi Dawud The Promised Deliverer (Kitab Al-Mahdi) Abdullah bin Wahb عبد الله بن وهب بن مسلم القرشي Sa'id bin Abi Ayoub سعيد بن أبي أيوب الخزاعي Shrahyl bin Yazid شراحيل بن يزيد Sulaiman bin Da'ud bin Da'ud سليمان بن داود بن داود بن علي Da'if Abu Ishaq told that Ali looked at his son al-Hasan and said: This son of mine is a sayyid (chief) as named by the Prophet (ﷺ), and from his loins will come forth a man who will be called by the name of your Prophet (ﷺ) and resemble him in conduct but not in appearance. He then mentioned the story about his filling the earth with justice. https://parallelquran.com/hadith/sunan-abi-dawud-4290/