Orthodox Judaism regards the tithe as still being required for any produce grown within the historic boundaries of the ancient Kingdoms of Israel and of Judah, covering the modern territories of the state of Israel, West Bank, Gaza Strip, Golan Heights, and portions of western Jordan. However, because "ma'aser rishon" has no inherent sanctity, consistent with Numbers (Levite tithes are wages), after "terumat ma'aser" has been removed, it is governed by the monetary civil laws which put the proof of a claim for monetary compensation on the person making the demand (the plaintiff). Since the lineage of the Levites is currently uncertain, there is no obligation to provide "ma'aser rishon" to a questionable Levi, whereas, there is no rabbinic prohibition by doing so.