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 midrashic interpretation of Nehemiah 13:20: and classical rabbinic exegesis.