Nehemiah 7:61 Halakhah

וְאֵ֗לֶּה הָֽעוֹלִים֙ מִתֵּ֥ל מֶ֙לַח֙ תֵּ֣ל חַרְשָׁ֔א כְּר֥וּב אַדּ֖וֹן וְאִמֵּ֑ר וְלֹ֣א יָכְל֗וּ לְהַגִּ֤יד בֵּית־אֲבוֹתָם֙ וְזַרְעָ֔ם אִ֥ם מִיִּשְׂרָאֵ֖ל הֵֽם׃

And these were they that went up from Tel-melah, Tel-harsha, Cherub, Addon, and Immer; but they could not tell their fathers’houses, nor their seed, whether they were of Israel:

Read halakhic rulings (Jewish law) on Nehemiah 7:61: and classical halakhic sources.