Ezra 4:21 Halakhah

כְּעַן֙ שִׂ֣ימוּ טְּעֵ֔ם לְבַטָּלָ֖א גֻּבְרַיָּ֣א אִלֵּ֑ךְ וְקִרְיְתָ֥א דָךְ֙ לָ֣א תִתְבְּנֵ֔א עַד־מִנִּ֖י טַעְמָ֥א יִתְּשָֽׂם׃

Make ye now a decree to cause these men to cease, and that this city be not builded, until a decree shall be made by me.

Read halakhic rulings (Jewish law) on Ezra 4:21: and classical halakhic sources.