Kamus Boasts Before Piran and the Khan

From B13.24, Piran Consults the Khan of Chin. It illustrates B13.24.4–15 (to B13.24.28):

B13.24.4
Piran approached Chin’s mighty Khan and soughtHis counsel on the war that must be fought.
B13.24.5
Kamus said, “Keep command of your own force;You have Afrasiab’s warriors and horse,
B13.24.6
And troops that roll like waves across the plain,Yet five months’ war has brought no lasting gain.
B13.24.7
Against so small a foe what have you done?Now earth is full of troops beneath the sun.
B13.24.8
The Khan, Manshur, and I are here to fight;Now let our prowess prove its promised might.
B13.24.9
Your caution locked the gate; we bring the key,And shall unleash the war you feared to see.
B13.24.10
Though Chin’s silk covered all the world’s broad face,With Kabul, Zabul, Hind in every place,
B13.24.11
Yet if I fought alone, Iran would beA name erased by warriors such as me.
B13.24.12
None then would say Iranians still remain;Their name would vanish from the battle-plain.
B13.24.13
You seek to frighten me with Rostam; knowI first will strike him down and lay him low.
B13.24.14
If once I catch him in my battle snare,Then none will speak of Rostam anywhere.
B13.24.15
You fear the army coming from Sistan;That thought has filled your heart with care, Piran.