כִּֽי־תִהְיֶ֨יןָ לְאִ֜ישׁ שְׁתֵּ֣י נָשִׁ֗ים הָאַחַ֤ת אֲהוּבָה֙ וְהָאַחַ֣ת שְׂנוּאָ֔ה וְיָֽלְדוּ־ל֣וֹ בָנִ֔ים הָאֲהוּבָ֖ה וְהַשְּׂנוּאָ֑ה וְהָיָ֛ה הַבֵּ֥ן הַבְּכ֖וֹר לַשְּׂנִיאָֽה׃
Kapag ang isang lalaki ay may dalawang asawa, ang isa ay minamahal at ang isa ay kinapopootan, at kapwa sila nagkaanak sa kanya ng mga anak na lalaki, ang minamahal at ang kinapopootan, at ang panganay na anak na lalaki ay sa kinapopootan,
Mishnah Bekhorot
A fetus extracted by means of a caesarean section and one that follows neither is a first-born for inheritance or a first-born to be redeemed from a priest. Rabbi Shimon says: the first is a first-born for inheritance and the second is a first-born as regards [the redemption] with five selas.