John Gill Commentary 1 Kings 13:29

"And the prophet took up the body of the man of God, and laid it upon the ass, and brought it back; and he came to the city of the old prophet, to mourn, and to bury him." — 1 Kings 13:29 (ASV)

And the prophet took up the carcass of the man of God
The lion perhaps made off as soon as he came, or, if he stayed, the prophet was not afraid of him, seeing he did not attempt to devour the carcass, nor touch the ass, nor do any hurt to those that passed by: and laid it upon the ass, and brought it back ;
to his own city: and the old prophet came to the city to mourn, and to bury him ;
to perform the funeral rites, according to the custom of the place.