Leviticus 22:14
14 sAnd if anyone eats of a holy thing unintentionally, he shall add tthe fifth of its value to it and give the holy thing to the priest.
Ezra 10:2
2 And Shecaniah the son of Jehiel, of the sons of Elam, addressed Ezra: n“We have broken faith with our God and have married foreign women from the peoples of the land, but even now there is hope for Israel in spite of this.