The Golden-Egg Bird Has Died

From D4.2, Faylaqus Dies and Iskandar Gains the Throne. It illustrates D4.2.17–22:

D4.2.17
One day a noble envoy came to court,Clear-minded, skilled in speech and apt report.
D4.2.18
From Dara came this envoy to demandThe tribute owed him by that prosperous land.
D4.2.19
He laid before Iskandar what was owed;The old tribute became a grievous load.
D4.2.20
Caesar said, “Tell Dara we pay no more;His claim no longer binds us as before.
D4.2.21
The bird that laid those golden eggs has died;From Rum no tribute now shall be supplied.”
D4.2.22
The herald quailed before the Roman king,Then fled the court as if he took to wing.