וַיָּלִ֨ינוּ הָרֹכְלִ֜ים וּמֹכְרֵ֧י כָל־מִמְכָּ֛ר מִח֥וּץ לִירוּשָׁלִָ֖ם פַּ֥עַם וּשְׁתָּֽיִם׃
So the merchants and sellers of all kind of ware lodged without Jerusalem once or twice.
Read Jewish philosophical commentary on Nehemiah 13:20: and classical philosophical sources.