The Arrow in the Roast Lamb

From D6.14, Mehrak of Jahram Sacks the Palace of Ardeshir. It illustrates D6.14.14–20:

D6.14.14
He ordered tables spread with cups and wine;Musicians played before the royal line.
D6.14.15
They set roast lambs in plenty on the board,And all bent down to eat with one accord.
D6.14.16
But when Ardeshir first began to eat,A pointed arrow struck the roasted meat.
D6.14.17
It struck the plump roast lamb and sank from sight,Its whole length buried in the flesh outright.
D6.14.18
The wise and warlike nobles, filled with dread,Drew back their hands at once from meat and bread.
D6.14.19
Each heart bled anguish; none could bear the feast.One drew the arrow from the roasted beast.
D6.14.20
They saw the writing on the shaft; aloudA scribe among them read it to the crowd.