Midrash su Genesi 31:43
וַיַּ֨עַן לָבָ֜ן וַיֹּ֣אמֶר אֶֽל־יַעֲקֹ֗ב הַבָּנ֨וֹת בְּנֹתַ֜י וְהַבָּנִ֤ים בָּנַי֙ וְהַצֹּ֣אן צֹאנִ֔י וְכֹ֛ל אֲשֶׁר־אַתָּ֥ה רֹאֶ֖ה לִי־ה֑וּא וְלִבְנֹתַ֞י מָֽה־אֶֽעֱשֶׂ֤ה לָאֵ֙לֶּה֙ הַיּ֔וֹם א֥וֹ לִבְנֵיהֶ֖ן אֲשֶׁ֥ר יָלָֽדוּ׃
Lavàn rispondendo disse a Giacobbe: Le donne sono mie figliuole, i figli sono miei figli, il bestiame è il mio bestiame, e quanto tu vedi è mio [di mia provenienza]. Ora come potrei io nuocere a queste, alle mie figliuole, o ai figli da esse partoriti?
Pirkei DeRabbi Eliezer
The sons of a man's sons are like his own sons. Whence do we learn (this)? From Jacob, because it is said, "Ephraim and Manasseh, even as Reuben and Simeon, shall be mine" (Gen. 48:5). Were they his sons? Were they not the sons of his son? But it teaches thee that the sons of a man's sons are as his own sons. And the sons of one's daughters are as one's own sons. Whence do we learn (this)? From Laban, because it is said, "And Laban answered and said unto Jacob, The daughters are my daughters, and the sons are my sons" (Gen. 31:43). Were they then his sons? Were they not the sons of his daughters? But it teaches thee that the sons of a man's daughters are like his own sons.
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