וּבְיוֹם֩ בֹּא֨וֹ אֶל־הַקֹּ֜דֶשׁ אֶל־הֶחָצֵ֤ר הַפְּנִימִית֙ לְשָׁרֵ֣ת בַּקֹּ֔דֶשׁ יַקְרִ֖יב חַטָּאת֑וֹ נְאֻ֖ם אֲדֹנָ֥י יְהוִֽה׃
성소에 수종들려 하여 안 뜰과 성소에 들어갈 때에는 속죄제를 드릴지니라 나 주 여호와의 말이니라
Tze'enah Ure'enah
“On the day that he reenters the sanctuary” [44:27]. The first time the priest will bring sacrifices in the Temple, he should bring a sin offering.
Rashi
And on the day that he enters into the Sanctuary for the first time to initiate himself into the service, he shall offer up his sin-offering; this is his one tenth of an ephah [of flour]. In Moed Katan (16a) the following is taught: the regular priest requires one tenth of an ephah on the day of his initiation, as it is stated (Lev. 6:13): “This is the offering of Aaron and his sons, etc.” and as is explained in Tractate Menachoth (51b).