Midrash su Deuteronomio 18:12

Bring forth (hayetze) with you every living thing that is with you…that they may swarm in the earth (Gen. 8:18). R. Yudan said: havtze is written, but it is read hayetze: that they may swarm in the earth - but not in the Ark. And be fruitful and multiply upon the earth - but not in the Ark. 'Every beast, every creeping thing, and every fowl, whatsoever moves (kol romes) upon the earth (Gen 8:19). R. Aivu said: Kol romes is written fully [with a vav] - it excludes kilayim [mixing species]. After their families: this excludes emasculation. The children of Noah were enjoined concerning seven tings: Idolatry, incest, murder, cursing the Divine Name [blasphemy], civil law, and a limb torn from a living animal. Rabbi Chanina ben Gamliel says: also concerning blood from a living animal. Rabbi Eleazar says: also against mixing species. Rabbi Shime'on ben Yochai says: also against witchcraft. Rabbi Yochanan ben Beroka says: also against emasculation. Rabbi Assi said: The children of Noah were ordered regarding everything stated in the sentence: 'There shall not be found among you any one that makes his son or his daughter to pass through the fire, etc.' (Deut. 18:10) and afterwards 'because it is an abomination for Ad-nai all that do this.' (Deut. 18:12)

R. Shimon b. Yochai says: An analogy: A king had many sons and servants, who were fed and sustained by him, the key to the storehouse being in his hand. When they do his will, he opens the storehouse and they eat and are sated. When they do not do his will, he locks the storehouse and they die of hunger. Thus with Israel. When they do the L-rd's will — (Devarim 18:12) "The L-rd will open for you His goodly treasure trove, the heavens," and when they do not do His will — (Ibid. 11:17) "And the wrath of the L-rd will burn against you, and He will hold back the heavens and there will not be rain."

(Devarim 18:12) "For the abomination of the L-rd are all who do these": Because it is written (Ibid.) "and because of these abominations," I might think that he is not liable until he transgresses all of them; it is, therefore, written "all who do these" — even one of these.