Gudarz Warns against Piran's Guile

From B14.7, Rostam Exhorts the Troops. It illustrates B14.7.28–39 (to B14.7.61):

B14.7.28
Gudarz, on hearing, rose and spoke outright:“O generous chief, who follows what is right,
B14.7.29
Pillar of troops, adornment of the throne,Through you the crown and royal helm have shone.
B14.7.30
Your shining wisdom is your spirit’s bread,The wealth by which its living strength is fed.
B14.7.31
Peace is the wiser course; but to begin,Remember that your ox is in its skin.
B14.7.32
I will repeat a saying from old days:Now hear the ancient counsel it conveys.
B14.7.33
As necks draw back when heavy loads increase,So wicked souls draw back from thoughts of peace.
B14.7.34
Piran gives pledges now beneath the strain,But strives to break the peace those vows maintain.
B14.7.35
The Maker shaped him with a double heart;Trust not his words or any guileful art.
B14.7.36
When first we set the armies in array,We held a parley, keeping war at bay.
B14.7.37
An envoy came from him to make it clear,‘I seek no strife, no drawn-out conflict here.
B14.7.38
I want no lands or tents to call my own;I pledge my service to the royal throne.’
B14.7.39
He heard our counsel, then replied, ‘I will goAnd tell my kin the things they need to know.