וַתֹּ֨אמֶר שָׂרַ֜י אֶל־אַבְרָ֗ם הִנֵּה־נָ֞א עֲצָרַ֤נִי יְהוָה֙ מִלֶּ֔דֶת בֹּא־נָא֙ אֶל־שִׁפְחָתִ֔י אוּלַ֥י אִבָּנֶ֖ה מִמֶּ֑נָּה וַיִּשְׁמַ֥ע אַבְרָ֖ם לְק֥וֹל שָׂרָֽי׃
E Sarai disse a Avram: "Eis que o Eterno me impediu de dar à luz; vá, por favor, até minha serva; talvez eu possa ter filhos por meio dela." E Avram ouviu a voz de Sarai.
Mishnah Nazir
[If one says,] “Behold, I am a nazirite when I shall have a son,” and son is born to him, he becomes a nazirite. If the child is a daughter, or a tumtum, or an hermaphrodite, he does not become a nazirite. If he said, “When I shall have a child,” then even if it is a daughter, or a tumtum, or an hermaphrodite, he becomes a nazirite.