Where does “имтихан” come from?

имтихан (Bashkir) comes from Arabic اِمْتِحَان — examination, test.

имтихан (Bashkir): examination, exam, test

Definitions

Step	Language	Word	Meaning
1	Arabic	اِمْتِحَان	examination, test

имтихан — Etymology, Origin & Word History | Etymology Explorer