Halakhah for Kilayim 8:7

And they, may their memory be blessed, said (Mishnah Kilayim 8:1) that even though there is lashes for both one who sows seeds of a forbidden mixture and one who grafts trees of a forbidden mixture - behold, they are permitted to be eaten; as it is only their planting that was forbidden. And so [too,] they permitted planting a sprig of a tree that was grafted with a forbidden mixture, and to plant a seed that was sowed in a forbidden mixture. And seeds are divided into three groups and three names and these are them: grains, legumes and garden seeds - and there are some of the garden seeds that are called types of vegetables. And even though it was forbidden to us to mix two types of seeds even if they are of one name - for example, wheat with barley, in that both of them are called grain; and so [too,] fava beans and peas, even though both of them are called legumes - nonetheless, there is a small distinction between them in the difference of the name. How is this? That if one part of wheat bigger than the twenty-three [individual] parts of barley was mixed unintentionally, there is no need to separate it out; less than this, he must separate it. But if it was from the garden seeds that was mixed, its measure is one in twenty-four of that which we plant from that type of garden seed in [a field, the measure of which is] a beit seah. And grain and legumes are like one specie concerning this, and their measurement is one part in twenty four of grain [regardless of how much of that type is planted in a field]. And they, may their memory be blessed, said (Mishnah Shekalim 1:1) that we announce about the shekalim and forbidden mixtures on the first of Adar; and everyone goes out to his garden and to his field, and cleans it from [these mixtures]. And everything that is two species, even though they are similar in their shape, are forbidden on account of forbidden mixtures. And everything that is one specie, even though their shapes are different because of the variation of location or the variation in the work on the land - behold, it is like one specie.

To not ask a yidaaoni: That we not ask a yidaaoni. And this matter is that the sorcerer puts a bone from an animal, the name of which is yidoaa, into his mouth, and that bone speaks through magic. And [regarding] this animal, the name of which is yidoaa, I have seen in a book from the Geonim (early post-Talmudic authorities) that (see Rash on Mishnah Kilayim 8:5) it grows with a large cord that comes out of the ground, similar to the cord of squash and pumpkins, its form is like the form of a man in everything - in the face, the body, the hands and the feet - and it is connected to the cord from its navel. And no creature can approach for the cord's length, since it grazes around it like the length of the cord, and it devours all that it can reach. And when they come to hunt it, they shoot arrows into its cord, until it is separated, and [then] it dies immediately. And in Talmud Yerushalmi Kilayim 8:4, they, may their memory be blessed, said in explanation of "For your covenant will be with the rocks of the field" (Job 5:23), "It is a man of the mountain, and it lives from its navel. If its navel is separated, it does not live."