Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[228] You are not to sow with seed a piece of land which is planted with vines, for it is enough that it supply nourishment to that plant, and be not harassed by ploughing also. You are to plough your land with oxen, and not to oblige other animals to come under the same yoke with them; but to till your land with those beasts that are of the same kind with each other. The seeds are also to be pure, and without mixture, and not to be compounded of two or three sorts, since nature does not rejoice in the union of things that are not in their own nature alike; nor are you to permit beasts of different kinds to gender together, for there is reason to fear that this unnatural abuse may extend from beasts of different kinds to men, though it takes its first rise from evil practices about such smaller things. Nor is any thing to be allowed, by imitation whereof any degree of subversion may creep into the constitution. Nor do the laws neglect small matters, but provide that even those may be managed after an unblamable manner.