https://thornhillkollel.com/wp-content/uploads/2016/08/Pesachim-perek-tes-mishna-7-what-the-halacha-would-be-if-a-person-designated-an-animal-for-his-korban-pesach-which-is-not-fit-to-be-one.mp3“Pesachim perek tes mishna 7 what the halacha would be if a person designated an animal for his korban pesach which is not fit to be one”.