The Battle at the Gates of Balkh

From B9.16, Siavash Leads the Army. It illustrates B9.16.47–53:

B9.16.47
Meanwhile, Siavash wasted not a day,But drove his army wind-like on its way.
B9.16.48
The Iranian army pressed with sudden speed;No time remained to pause or take good heed.
B9.16.49
Garsivaz saw no path but to engage,And drove his forces forward in their rage.
B9.16.50
Beside the gates of Balkh the armies met,And closed in battle where their lines were set.
B9.16.51
Three days they fought with fury side by side;The fourth day brought the change in battle’s tide.
B9.16.52
Then Siavash sent footmen to each gate,And through them poured a mighty force in weight.
B9.16.53
Sipahram fled and crossed the river’s course,And came to Afrasiab with broken force.