Related for Maaser Sheni 3:9
מַעֲשֵׂר שֵׁנִי שֶׁנִּכְנַס לִירוּשָׁלַיִם וְנִטְמָא, בֵּין שֶׁנִּטְמָא בְאַב הַטֻּמְאָה, בֵּין שֶׁנִּטְמָא בִּוְלַד הַטֻּמְאָה, בֵּין בִּפְנִים בֵּין בַּחוּץ, בֵּית שַׁמַּאי אוֹמְרִים, יִפָּדֶה וְיֵאָכֵל הַכֹּל בִּפְנִים, חוּץ מִשֶּׁנִּטְמָא בְּאַב הַטֻּמְאָה בַּחוּץ. וּבֵית הִלֵּל אוֹמְרִים, הַכֹּל יִפָּדֶה וְיֵאָכֵל בַּחוּץ, חוּץ מִשֶּׁנִּטְמָא בִּוְלַד הַטֻּמְאָה בִּפְנִים:
<i>Ma'aser Sheni</i> that entered Jerusalem and became impure, whether it became impure from an <i>Av HaTumah</i> [dead creature that transfers the highest level of impurity] or it became impure from a <i>Velad HaTumah</i> [something that touched a dead creature and transfers a lower level of impurity], whether inside [Jerusalem] or outside [Jerusalem], Beit Shammai say it should be redeemed and should be eaten entirely inside [Jerusalem], unless it became impure from an <i>Av HaTumah</i> outside [Jerusalem]. Beit Hillel say all of it should be redeemed and eaten outside [Jerusalem], unless it became impure from a <i>Velad HaTumah</i> inside [Jerusalem].