Where does “Зөлхизә” come from?

Зөлхизә (Bashkir) comes from Arabic ذُو الْحِجَّة — twelfth month of the Islamic calendar.

Ancestry of “Зөлхизә”, step by step

Step	Language	Word	Meaning
1	Arabic	ذُو الْحِجَّة	twelfth month of the Islamic calendar

Зөлхизә — Etymology, Origin & Word History | Etymology Explorer