וַיַּ֨עַל בַּעְשָׁ֤א מֶֽלֶךְ־יִשְׂרָאֵל֙ עַל־יְהוּדָ֔ה וַיִּ֖בֶן אֶת־הָרָמָ֑ה לְבִלְתִּ֗י תֵּ֚ת יֹצֵ֣א וָבָ֔א לְאָסָ֖א מֶ֥לֶךְ יְהוּדָֽה׃
And Baasa king of Israel went up against Judah, and built Ramah, that he might not suffer any to go out or come in to Asa king of Judah.
Read halakhic rulings (Jewish law) on I Kings 15:17: and classical halakhic sources.