Deuteronomy 17:4 Halakhah

וְהֻֽגַּד־לְךָ֖ וְשָׁמָ֑עְתָּ וְדָרַשְׁתָּ֣ הֵיטֵ֔ב וְהִנֵּ֤ה אֱמֶת֙ נָכ֣וֹן הַדָּבָ֔ר נֶעֶשְׂתָ֛ה הַתּוֹעֵבָ֥ה הַזֹּ֖את בְּיִשְׂרָאֵֽל׃

and it be told thee, and thou hear it, then shalt thou inquire diligently, and, behold, if it be true, and the thing certain, that such abomination is wrought in Israel;