Ezra 2:61-63

Complete Jewish Bible

⁶¹ and of the descendants of the cohanim:

⁶² These tried to locate their genealogical records, but they weren’t found. Therefore they were considered defiled and were not allowed to serve as cohanim. ⁶³ The Tirshata told them not to eat any of the especially holy food until a cohen appeared who could consult the urim and tumim.