Śatapatha Brāhmaṇa ("of a hundred paths") 13.2.4

Pragâpati desired, 'Would that I might gain both worlds, the world of the gods, and the world of men.' He saw those beasts, the tame and the wild ones; he seized them, and by means of them took possession of these two worlds: by means of the tame beasts he took possession of this (terrestrial) world, and by means of the wild beasts of yonder (world); for this world is the world of men, and yonder world is the world of the gods. Thus when he seizes tame beasts he thereby takes possession of this world, and when wild beasts, he thereby (takes possession) of yonder (world).

Were he to complete (the sacrifice) with tame ones, the roads would run together, the village-boundaries of two villages would be contiguous, and no ogres, man-tigers, thieves, murderers, and robbers would come to be in the forests. By (so doing) with wild (beasts) the roads would run asunder, the village-boundaries of two villages would be far asunder; and there would come to be ogres, man-tigers, thieves, murderers, and robbers in the forests.

As to this they say, 'Surely that--to wit, the forest (beast)--is not a beast (or cattle), and offering should not be made thereof: were he to make offering thereof, they would ere long carry away the Sacrificer dead to the woods, for forest (or wild) beasts have the forest for their share; and were he not to make offering thereof, it would be a violation of the sacrifice.' Well, they dismiss them after fire has been carried around them: thus, indeed, it is neither an offering nor a non-offering, and they do not carry the Sacrificer dead to the forest, and there is no violation of the sacrifice.

He completes (the sacrifice) with tame (beasts),--father and son part company, the roads run together, the village-boundaries of two villages become contiguous, and no ogres, man-tigers, thieves, murderers, and robbers come to be in the forests.