The Word Kid and What It Includes and Excludes in the Milk Law

It was taught: "in its mother's milk." One might think it means "in its mother's fat." You say: there is a tradition that follows the way the word is read aloud, and a tradition that follows the way it is written. And for the one who holds that we follow the written form, Scripture says "you shall not boil" — the Torah forbade the manner of cooking [which applies to milk, not fat]. The flesh of a clean animal in the milk of a clean animal is forbidden to cook and forbidden to benefit from. From where do we know these things? Rabbi Eleazar said: Scripture says, "And Judah sent the kid of the goats" (Genesis 38:20) — here "kid of goats," hence wherever "kid" is stated without qualification, even a cow or a ewe is implied. Then let us derive it from this verse alone? Another verse is written, "the skins of the kids of the goats" (Genesis 27:16), so these are two verses coming as one, and two such verses do not teach. And for the one who holds they do teach, what can be said? Two limiting words are written, "goats," "the goats." Shmuel said: "Kid" includes the fat. "Kid" includes the dead animal. "Kid" includes the unborn fetus. "Kid" excludes the blood. "Kid" excludes the afterbirth. "Kid" excludes the unclean animal. "In its mother's milk" — and not in the milk of a male. "In its mother's milk" — and not in the milk of a slaughtered animal. "In its mother's milk" — and not in the milk of an unclean animal. But only three instances of "kid" are written, and we expound six! Shmuel holds that a prohibition can take effect upon a prohibition, and the bans on fat and on a dead animal emerge from one verse, while blood and afterbirth are simply matters of plain exclusion; two verses remain, one to include the fetus and one to exclude the unclean animal.