The Blood of Siavash

From B9.55, Siavash Falls by Gurvi’s Hand. It illustrates B9.55.24–31:

B9.55.24
The basin filled; then Gurvi Zereh boreThe blood to where the king had marked before.
B9.55.25
He overturned it on the appointed ground,Where barren earth lay silent all around.
B9.55.26
At once a plant sprang from that bloody seed,A living witness to the brutal deed.
B9.55.27
They call it Blood of Siavash to this day,A sign no passing age can sweep away.
B9.55.28
When life withdrew from that now fallen frame,And silence closed upon his lifeless name,
B9.55.29
He sank in sleep no morning could dispel,Where neither dawn nor waking radiance fell.
B9.55.30
A black wind rose, and dust obscured the sky,And veiled the sun and moon from every eye.
B9.55.31
No man could see the face beside his own,So thick the dark across the world had grown.