Qalandar
Primarily a Sufi title for wandering mystics, but historically used as a rare given name in Persianate and Bengali cultures.
In Bengali Sufi tradition, Qalandar represents the highest stage of spiritual freedom, often associated with folk saints and Baul singers.
The specific term is not in the Quran, but the spiritual state of detachment (zuhd) is praised.
Due to its association with specific Sufi practices of homelessness and wandering, it is rarely given as a birth name except by deeply spiritual families.
Both refer to Sufi ascetics; Qalandar specifically emphasizes wandering and ecstatic practices (malamatiyya), while Darvesh is broader.