“In presenting the best part in this manner, you will bear no guilt in these matters. You will not defile the holy things of Bnei-Yisrael, so you will not die.”
“This is the statute of the Torah which Adonai commanded saying: Speak to Bnei-Yisrael that they bring to you a flawless red heifer on which there is no blemish and on which has never been a yoke.