כֹּהֵן גָּדוֹל וְנָזִיר אֵינָן מִטַּמְּאִין לִקְרוֹבֵיהֶן. כְּדִכְתִיב בְּפָרָשַׁת אֱמֹר וּבְפָרָשַׁת נָשֹׂא: כהן גדול ונזיר אינן מטמאין לקרוביהן – as it is written in the Torah portion of Emor (Leviticus 21:11 – “He shall not defile himself even for his father or mother.”) and the Torah portion of Naso (Numbers 6:7: “Even if his father or mother, or his brother or sister should die, he must not defile himself for them, since hair set apart for his God is upon his head.”)
הָיוּ מְהַלְּכִים בַּדֶּרֶךְ. לָאו דַוְקָא בְּכֹהֵן גָּדוֹל פְּלִיגֵי, דְּהוּא הַדִּין בְּכֹהֵן הֶדְיוֹט נַמִּי פְלִיגֵי, דְּחַד טַעְמָא הוּא: היו מהלכים בדרך – not specifically regarding the High Priest do they dispute (i.e., Rabbi Eliezer and the Sages), for the same law applies regarding the common priest, they also dispute, and it is one reason.