Commentary for Genesis 34:22

אַךְ־בְּ֠זֹאת יֵאֹ֨תוּ לָ֤נוּ הָאֲנָשִׁים֙ לָשֶׁ֣בֶת אִתָּ֔נוּ לִהְי֖וֹת לְעַ֣ם אֶחָ֑ד בְּהִמּ֥וֹל לָ֙נוּ֙ כָּל־זָכָ֔ר כַּאֲשֶׁ֖ר הֵ֥ם נִמֹּלִֽים׃

Only on this condition will the men consent unto us to dwell with us, to become one people, if every male among us be circumcised, as they are circumcised.

Rashi on Genesis