Nehemiah 4:11 Midrash

הַבּוֹנִ֧ים בַּחוֹמָ֛ה וְהַנֹּשְׂאִ֥ים בַּסֶּ֖בֶל עֹמְשִׂ֑ים בְּאַחַ֤ת יָדוֹ֙ עֹשֶׂ֣ה בַמְּלָאכָ֔ה וְאַחַ֖ת מַחֲזֶ֥קֶת הַשָּֽׁלַח׃

They that builded the wall and they that bore burdens laded themselves, every one with one of his hands wrought in the work, and with the other held his weapon;