וַיַּשְׁבִּעֵ֥נִי אֲדֹנִ֖י לֵאמֹ֑ר לֹא־תִקַּ֤ח אִשָּׁה֙ לִבְנִ֔י מִבְּנוֹת֙ הַֽכְּנַעֲנִ֔י אֲשֶׁ֥ר אָנֹכִ֖י יֹשֵׁ֥ב בְּאַרְצֽוֹ׃
Y mi amo me hizo jurar, diciendo: No tomarás mujer para mi hijo de las hijas de los Cananeos, en cuya tierra habito;
Rashi on Genesis
לא תקח אשה לבני מבנות הכנעני THOU SHALT NOT TAKE A WIFE FOR MY SON FROM THE DAUGHTERS OF THE CANAANITES if you do not first go to my father’s house and to my family that thou mayest take a wife to my son and she will not be willing to follow you.
Radak on Genesis
וישביעני, if you were to ask that if all this is true, why is that I come all this way to find a wife for this man, the reason is that my master made me swear to find a suitable wife for his son from among members of his own family.
Sforno on Genesis
וישביעני אדוני, seeing that my master despises the people in his own land and has chosen you to become his in-laws, he has sent me on this errand.