וְלָ֣קַחְתָּ֔ אֵ֖ת הָאַ֣יִל הַשֵּׁנִ֑י וְסָמַ֨ךְ אַהֲרֹ֧ן וּבָנָ֛יו אֶת־יְדֵיהֶ֖ם עַל־רֹ֥אשׁ הָאָֽיִל׃
And thou shalt take the other ram; and Aaron and his sons shall lay their hands upon the head of the ram.
Read kabbalistic (mystical) interpretation of Exodus 29:19: and classical mystical sources.