Luke 15:23 contains the father's command to kill the fattened calf — the very event the servant reports here. Direct narrative link.

Luke 15:30 is the older son's angry echo of this news — contrasting his bitterness with the father's joy over the same event.

Genesis 18:7 has Abraham preparing a calf for hospitality — a typological parallel of a feast for an unexpected guest, prefiguring God's welcome.