וַיֹּ֤אמֶר לוֹ֙ לָבָ֔ן אַ֛ךְ עַצְמִ֥י וּבְשָׂרִ֖י אָ֑תָּה וַיֵּ֥שֶׁב עִמּ֖וֹ חֹ֥דֶשׁ יָמִֽים׃
И сказал ему Лаван: 'Ты, конечно, моя кость и моя плоть.' И он поселился у него в течение месяца.
Rashi
אך עצמי ובשרי SURELY THOU ART MY BONE AND MY FLESH — Really, I have no reason to take you into my house, since you have brought nothing with you; but because of our relationship I will put up with you for “the space of a month”. Thus, indeed, he did, but even this was not for nothing, for he tended Laban’s sheep.
Chizkuni
אך עצמי ובשרי אתה, “Lavan said that legally speaking he should not have given Yaakov shelter, just as his other relatives had not protected him and forced him to flee after he had cheated his brother on two separate occasions. However, “seeing that you are my own flesh and blood,I will make an exception and not kick you out.”
Rashbam
אך עצמי ובשרי, you have therefore done well in coming to me.