Shaikh Abu Nuʿaym (948–1038) was an influential Persian Sunni scholar, Hadith traditionist, and author known for his comprehensive collection of early Muslim Shuyookh biographies, Hilyat Al-Awliya. He was a leading authority on hadith, renowned for his vast and strong chains of transmission, and played a significant role in integrating Sufism into mainstream Islamic tradition by chronicling its founders and early figures.