וְכִפֶּ֨ר הַכֹּהֵ֜ן אֲשֶׁר־יִמְשַׁ֣ח אֹת֗וֹ וַאֲשֶׁ֤ר יְמַלֵּא֙ אֶת־יָד֔וֹ לְכַהֵ֖ן תַּ֣חַת אָבִ֑יו וְלָבַ֛שׁ אֶת־בִּגְדֵ֥י הַבָּ֖ד בִּגְדֵ֥י הַקֹּֽדֶשׁ׃
און דער כֹּהן װאָס מע װעט אים זאַלבן, און װאָס מע װעט דערפֿילן זײַן האַנט צו זײַן אַ כֹּהן אױף זײַן פֿאָטערס אָרט, זאָל מכַפּר זײַן; און ער זאָל אָנטאָן די לײַנענע קלײדער, די הײליקע קלײדער.
Mishnah Yoma
Seven days before Yom HaKippurim they remove the high priest from his house to the chamber of the counselors and they set up another priest to take his place lest something should occur to him to disqualify him [from being able to worship]. Rabbi Judah said: they even prepare another wife for him in case his wife should die, as it says “And he shall make atonement for himself and for his house” (Leviticus 16:6): “his house” this refers to his wife. They said to him: if so there would be no end to the matter.