Hadith #4284 (Sunan Abi Dawud)
Book: The Promised Deliverer (Kitab Al-Mahdi)
Narrator(s): Abu Sa'id al-Khudri, al-Mandhar bin Malik bin Qata' المنذر بن مالك بن قطعة - أبو نضرة العبدي, Imran bin Da'ud al-'Ami Abu al-'Awwam عمران بن داود العمي أبو العوام القطان, Qatada قتادة, Sahl bin Tmam bin Bzy' سهل بن تمام بن بزيع
Grade: Sahih

The Prophet (ﷺ) said: The Mahdi will be of my family, of the descendants of Fatimah. Abdullah ibn Ja’far said: I heard AbulMalih praising Ali ibn Nufayl and describing his good qualities.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-4284/