Afrasiab Finds Rostam Awake

From C4.16, Gang-Behesht Shelters Afrasiab. It illustrates C4.16.44–49:

C4.16.44
When Afrasiab drew near the city wall,He thought: “Now Rostam sleeps, and hears no call.
C4.16.45
At night I strike his army where it lies,And make the dust above his army rise.”
C4.16.46
But in the gloom he saw the outposts set,And heard the chargers neigh through darkness yet.
C4.16.47
He marveled at the watchful Rostam’s skill,And rode on, deep in thought and anxious still.
C4.16.48
He knew his troops were beaten and distressed,And life itself was struggling in each breast.
C4.16.49
Rostam stood armed before him on the road;Behind, the Shah and all his horsemen rode.