Pirooz Khosrow on the Unbroken Colt

From E9.4, The Reign of Poorandokht. It illustrates E9.4.7–17:

E9.4.7
She sought for Pirooz Khosrow; then there cameA trusty man with tidings of that name.
E9.4.8
She chose renowned men from the ranks that day;They brought Pirooz to hear what she would say.
E9.4.9
She cried, “Foul-hearted villain, face your fate;Receive the dark reward your crimes create.
E9.4.10
Now you shall pay for all the wrong you sow;I shall make a stream of blood from your neck flow.”
E9.4.11
She bade them lead a wild colt from its stall,That never yet had felt the saddle’s gall.
E9.4.12
They bound him, firm as stone, upon its back,A noose about his neck that held no slack.
E9.4.13
The untamed colt was led, with Pirooz bound,Into the open, on the riding-ground.
E9.4.14
She sent some riders out across the course,Each with a kamand strapped upon his horse.
E9.4.15
The wild steed plunged and reared in frantic flight,And dashed the traitor down in all men’s sight.
E9.4.16
His skin was torn; the blood began to flowOut of his body, seeping soft and slow.
E9.4.17
Pirooz at last surrendered breath in pain,And died in shame upon that dreadful plain.