עַל־כֵּ֛ן יֹאמְר֥וּ הַמֹּשְׁלִ֖ים בֹּ֣אוּ חֶשְׁבּ֑וֹן תִּבָּנֶ֥ה וְתִכּוֹנֵ֖ן עִ֥יר סִיחֽוֹן׃
Wherefore they that speak in parables say: Come ye to Heshbon! Let the city of Sihon be built and established!
Read halakhic rulings (Jewish law) on Numbers 21:27: and classical halakhic sources.