Commentary for Numbers 31:47

וַיִּקַּ֨ח מֹשֶׁ֜ה מִמַּחֲצִ֣ת בְּנֵֽי־יִשְׂרָאֵ֗ל אֶת־הָֽאָחֻז֙ אֶחָ֣ד מִן־הַחֲמִשִּׁ֔ים מִן־הָאָדָ֖ם וּמִן־הַבְּהֵמָ֑ה וַיִּתֵּ֨ן אֹתָ֜ם לַלְוִיִּ֗ם שֹֽׁמְרֵי֙ מִשְׁמֶ֙רֶת֙ מִשְׁכַּ֣ן יְהוָ֔ה כַּאֲשֶׁ֛ר צִוָּ֥ה יְהוָ֖ה אֶת־מֹשֶֽׁה׃

even of the children of Israel’s half, Moses took one drawn out of every fifty, both of man and of beast, and gave them unto the Levites, that kept the charge of the tabernacle of the LORD; as the LORD commanded Moses.

Rashi on Numbers