Muslim ascetic (7)
'muslim ascetic' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for dervish that I've seen before include "Religious adherent" , "Member of Muslim order noted for wild dancing and whirling" , "'Member of a Muslim order, noted for swirling movements (7)'" , "Shrived as by Muslim vowed to poverty" , "Muslim ascetic, maybe dancing" .)
'muslim ascetic' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for fakir that I've seen before include "Ascetic in India" , "Ascetic type" , "Holy man of the East" , "Muslim mendicant monk and holy man" , "Religious mendicant in India" .)