וַיֹּאמְר֣וּ אֲלֵיהֶ֗ם לֹ֤א נוּכַל֙ לַעֲשׂ֣וֹת הַדָּבָ֣ר הַזֶּ֔ה לָתֵת֙ אֶת־אֲחֹתֵ֔נוּ לְאִ֖ישׁ אֲשֶׁר־ל֣וֹ עׇרְלָ֑ה כִּֽי־חֶרְפָּ֥ה הִ֖וא לָֽנוּ׃
And they said to them: We cannot do this thing, to give our sister to a man who has a foreskin, for that is a disgrace to us.
Torah Temimah points to the same discussion of milah as a distinguishing mark.
לא נוכל לתת את אחותנו לאיש אשר לו ערלה.
We cannot give our sister to a man who has a foreskin.
The brothers present circumcision as the condition for intermarriage.
Derash on the condition of milah (continuation).
Circumcision is presented as the prerequisite for accepting the proposal of intermarriage.