Quotation do Kapłańska 22:9

He prohibited an impure priest from eating the priestly tithe. And that is His saying, "Whichever man of the seed of Aharon that is stricken with tzaraat" (Leviticus 22:4). And in the Gemara, Makkot (Makkot 14b): "From where [do we know] of a prohibition of the priestly tithe? From, 'Whichever man, etc.' What is something that is equal among the seed of Aharon? I would say, 'This is the priestly tithe'" - that is to say, that all of the seed will eat it, males and females. And the prohibition about this content has also already been repeated by His, may He be exalted, saying, "And they shall keep My charge" (Leviticus 22:4). And one who transgresses this negative commandment is liable for death at the hands of the Heavens. And in Sanhedrin (Sanhedrin 83a), they listed those liable for death - and among them was one who ate pure priestly tithe when he was impure. And they brought a proof from His saying, "And they shall keep My charge." (See Parashat Emor; Mishneh Torah, Heave Offerings 10.)