Numbers 32:27

Build cities for your little ones, and folds for your sheep; and do that which has proceeded out of your mouth.”

The children of Gad and the children of Reuben spoke to Moses, saying, “Your servants will do as my lord commands.

Our little ones, our wives, our flocks, and all our livestock shall be there in the cities of Gilead;

So Moses commanded concerning them to Eleazar the priest, and to Joshua the son of Nun, and to the heads of the fathers’ households of the tribes of the children of Israel.

Moses said to them, “If the children of Gad and the children of Reuben will pass with you over the Jordan, every man who is armed to battle before the LORD, and the land is subdued before you, then you shall give them the land of Gilead for a possession;

but if they will not pass over with you armed, they shall have possessions among you in the land of Canaan.”