The Storm Breaks the Walls of Karsan

From E6.13, The Hermit’s Prophecy to Khosrow. It illustrates E6.13.61–72:

E6.13.61
They reached the fortress of Karsan at last,Whose Christian wardens made the portals fast;
E6.13.62
They barred the gates in terror and surprise,And watched the strangers with suspicious eyes.
E6.13.63
Within, they shot the bolts and stood aghast;The Shah remained outside, his heart downcast.
E6.13.64
The royal exile waited, sore distressed,Three days outside, with hungry troops hard-pressed.
E6.13.65
Upon the fourth he sent a man to say:“Our troops are few and worn upon the way.
E6.13.66
We have not come to fight against this town;Do not let hunger wear our people down.
E6.13.67
Send provender and relief in our need;Do not oppose us with so harsh a deed.”
E6.13.68
They scorned his words; his troops were weak and worn,Their strength by hunger and exhaustion torn.
E6.13.69
Then suddenly a murky cloud arose,And roared like a war-lion at its foes.
E6.13.70
A storm swept over that embattled place;From every quarter rose a cry for grace.
E6.13.71
By midnight part of its great walls fell down;Amazement seized the people of the town.
E6.13.72
The bishop prayed; they gathered food in fear,From every quarter, and drew quickly near.