Fudayl
He was a famous early Sufi saint and ascetic from Khorasan (modern Iran/Afghanistan), known for his piety, wisdom, and transformation from a highwayman to a revered mystic.
It means virtuous, excellent, or possessing surplus goodness, derived from the root f-d-l which signifies divine favor and excellence.
It is Arabic in origin but deeply integrated into Persian Sufi culture and history, particularly through the legacy of Fudayl ibn Iyad.
The name itself is not in the Quran, but it derives from the Arabic root for divine favor (f-d-l) which appears frequently in Quranic verses.
Yes, it is a rare but meaningful choice for parents seeking a name with deep spiritual and historical roots in Islamic civilization.