Parashas Naso
וַיַּֽעֲשׂוּ־כֵן֙ בְּנֵ֣י יִשְׂרָאֵ֔ל וַיְשַׁלְּח֣וּ אוֹתָ֔ם אֶל־מִח֖וּץ לַֽמַּחֲנֶ֑ה כַּאֲשֶׁ֨ר דִּבֶּ֤ר יְהֹוָה֙ אֶל־מֹשֶׁ֔ה כֵּ֥ן עָשׂ֖וּ בְּנֵ֥י יִשְׂרָאֵֽל׃ {פ}
The Israelites did so, putting them outside the camp; as GOD had spoken to Moses, so the Israelites did.
Torah Temimah points to TT (verified).
כן עשו — מה ת״ל? ללמד שאף הטמאים עצמן לא עכבו.
English: “So they did” — what does this teach? That even the impure themselves did not delay.
Custom
Chazal teach that the impure cooperated and did not resist being sent from the camp.