וַיִּשָּׂ֥א מְשָׁל֖וֹ וַיֹּאמַ֑ר מִן־אֲ֠רָם יַנְחֵ֨נִי בָלָ֤ק מֶֽלֶךְ־מוֹאָב֙ מֵֽהַרְרֵי־קֶ֔דֶם לְכָה֙ אָֽרָה־לִּ֣י יַעֲקֹ֔ב וּלְכָ֖ה זֹעֲמָ֥ה יִשְׂרָאֵֽל׃
And he took up his parable, and said: From Aram Balak bringeth me, The king of Moab from the mountains of the East: ‘Come, curse me Jacob, And come, execrate Israel.’
Read halakhic rulings (Jewish law) on Numbers 23:7: and classical halakhic sources.