וַיֹּ֥אמֶר יִרְמְיָ֖הוּ אֶל־שְׂרָיָ֑ה כְּבֹאֲךָ֣ בָבֶ֔ל וְֽרָאִ֔יתָ וְֽקָרָ֔אתָ אֵ֥ת כָּל־הַדְּבָרִ֖ים הָאֵֽלֶּה׃
And Jeremiah said to Seraiah: ‘When thou comest to Babylon, then see that thou read all these words,
Read halakhic rulings (Jewish law) on Jeremiah 51:61: and classical halakhic sources.