This is the biography of the notable Imam, Sufyaan ibn 'Uyaynah, may Allah have mercy on him, who linked the generation of the Tabi'in with that of the followers of Atba' al-Atba (the second generation after the Sahabah). He was the rare and unique scholar of his age, and he was a torch for the Sunnah and a proof upon the Ummah, may Allah Have mercy upon him.