Leviticus 6:13

זה קרבן אהרון ובניו THIS IS THE OFFERING OF AARON AND HIS SONS — The ordinary priests, too, offer a tenth part of an ephah of flour on the day they are installed into the priestly service; the High Priest, however, offers one every day, as it is said, “a continual meal-offering, [half of it in the morning, and half thereof in the evening] etc. And the priest amongst his sons that is anointed in his stead (i. e. every high priest) [shall offer it]; it is a statute for ever” (Sifra, Tzav, Section 3 1-4; Menachot 51b).

זֶ֡ה קׇרְבַּן֩ אַהֲרֹ֨ן וּבָנָ֜יו אֲשֶׁר־יַקְרִ֣יבוּ לַֽיהֹוָ֗ה בְּיוֹם֙ הִמָּשַׁ֣ח אֹת֔וֹ עֲשִׂירִ֨ת הָאֵפָ֥ה סֹ֛לֶת מִנְחָ֖ה תָּמִ֑יד מַחֲצִיתָ֣הּ בַּבֹּ֔קֶר וּמַחֲצִיתָ֖הּ בָּעָֽרֶב׃

This is the offering of Aharon and of his sons, which they shall offer to the Lord on the day when he is anointed; the tenth part of an efa of fine flour for a meal offering perpetual, half of it in the morning, and half of it at night.