Bechoros 9:1-2

Bechoros 9:1

Animal tithes apply both in Israel and elsewhere, while the Temple is standing and when it isn’t, to secular animals but not to consecrated animals. It applies to both cattle and flocks, though one may not be tithed for the other; it applies to both sheep and goats, and one may be tithed for the other. It applies to both new and old animals, but one may not be tithed for the other. One might think that if new and old animals, which do not present a problem of crossbreeding, can’t be tithed for one another, then the same must certainly be true of sheep and goats, which may not be cross-bred. However, Leviticus 27:32 says “and of the flock,” from which we learn that all kinds of flock are fungible.

Bechoros 9:2

Animal tithes combine for as far as the animal grazes, which is 16 mil (perhaps around 9.5 miles). If there were 32 mil between two groups of animals, they do not combine; if he had some animals in between the two groups, he brings all the animals together and tithes them in the middle. Rabbi Meir says that the Jordan river divides between animals on either side in matters of tithes.