Midras Kejadian 9:3: Sifra, Ein Yaakov (Glick Edition), Midrash Tanchuma & Pirkei DeRabbi Eliezer

3) (Vayikra 11:2): "This is the animal that you may eat, of every beast that is upon the earth": One declaration replaces another. From (Bereshith 9:3): "As the green herb, I have given you (the sons of Noach) everything," I might assume that everything was permitted; it is, therefore, written (Devarim 14:4): "This is the beast that you may eat: the ox, the lamb of sheep, and the kid of goats, (Devarim 14:5) the hart, the gazelle, and the fallow deer, and the wild goat, and the dyshon, and the wild ox, and the chamois."

(Fol. 59b) R. Juda said in the name of Rab: "Adam was not permitted to eat meat, as it is written (Ib. 1, 29) To you it shall be for food, and to every beast of the field; i.e., but not the beasts to you. However, after the descendants of Noah came, he permitted them, as it is said (Ib. 9, 3) Every moving thing that liveth shall be yours for food; even as the green herbs have I given you all things. And lest one say that they may be eaten while still alive, it reads (Ib.) But flesh in which its life is, which is its blood, shall ye not eat." We are taught in a Baraitha that R. Simon b. Menassia says: "Woe that a great servant was lost to the world, for if the serpent had not been cursed, everyone would have had two serpents in his house, one he would have sent to the South and the other to the North to bring him beautiful gems, precious stones and pearls and all other valuable things of the world, against whom no creature could have stood; and furthermore, they could have fastened a strap under its tail with which to pull out mud into his garden or onto the dump." The following objection was raised. R. Juda b. Bathyra said: "Adam the First was sitting in the garden of Eden, and the angels served him with roasted meat. "When the serpent looked in and observed his honor he became jealous." [Hence he was allowed to eat meat]! This refers to meat which came from heaven. But is there then any meat which came from heaven? Yea! As it happened to R. Simon b. Chalafta, who, being on the road, met lions, which were stirred against him; and he remarked (Ps. 104, 21) The young lions cry after their prey. Thereupon a miracle occurred, and two legs fell from heaven, one of which the lions consumed and the other remained. Simon took it, brought it into the college, and questioned: "Is this of a clean animal or of an unclean?" They answered him: "An unclean thing never comes from heaven."

This is the animal that you shall eat: This is what the verse stated (Psalms 40:9), "To do Your will, my God, have I desired; and your Torah is in my innards." Happy is Israel, as He gave a commandment for each and every one [of their] limbs, as there are two hundred and forty-eight limbs in a man. And therefore we say every day, "Blessed are You, Lord, our God, King of the World, who has created man with wisdom, and created in him many holes and many channels." The numerical equivalent of many channels (chalulim, chalulim) is two hundred and forty-eight - that is like the tally of limbs in a man. In the head, do not round the corner of your heads" (Leviticus 19:27). On the flesh, "A gash for a soul you shall not place into your flesh" (Leviticus 19:28). And also the commandment of circumcision, as it is stated (Genesis 17:11), "And you shall circumcise the flesh of your foreskin." And further that He sealed his name, which is Sha-dai, into the Children of Israel - the shin in the noses, the dalet in the hand and the yod in the circumcision. The shin in the noses, so that they not accept nor derive benefit from that which is stolen; the dalet in the hand, so that the give and take (buying and selling) of a man be with propriety and not with theft; and the yod in the circumcision, so that a man not sin, etc."