Vayikra 9:1-2

Orthodox Jewish Bible

9 And it come to pass on yom hashemini, that Moshe called to Aharon and his Banim, and the Ziknei Yisroel;

² And he said unto Aharon, Take thee a young calf for a chattat (sin offering), and a ram for an olah (burnt offering), temimim (without blemish), and offer them before Hashem.