וּבְנֵ֨י רְאוּבֵ֥ן בְּכֽוֹר־יִשְׂרָאֵל֮ כִּ֣י ה֣וּא הַבְּכוֹר֒ וּֽבְחַלְּלוֹ֙ יְצוּעֵ֣י אָבִ֔יו נִתְּנָה֙ בְּכֹ֣רָת֔וֹ לִבְנֵ֥י יוֹסֵ֖ף בֶּן־יִשְׂרָאֵ֑ל וְלֹ֥א לְהִתְיַחֵ֖שׂ לַבְּכֹרָֽה׃
Anak-anak Ruben, anak sulung Israel — dialah memang anak sulung, tetapi karena ia menajiskan ranjang ayahnya, hak kesulungannya diberikan kepada anak-anak Yusuf anak Israel, meskipun tidak sampai dicatat dalam silsilah sebagai anak sulung.
Berakhot
But as for my son, although Joseph forcibly deprived him of his birthright — as it is written, 'But, forasmuch as he defiled his father's couch, his birthright was given unto the sons of Joseph' (I Chron. v. 1 ) — nevertheless he was not jealous of him; for it is written, 'And Reuben heard it, and delivered him out of their hand' (Gen. xxxrii. 21)."