Valmiki Ramayana Sundara Kanda Sarga 56 Shloka 5
Original Shlokaतद्यथा तस्य विक्रान्तमनुरूपं महात्मनः। भवत्याहवशूरस्य तथा त्वमुपपादय।।5.56.5।।
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तत् that, महात्मनः the exalted, आहवशूरस्य who is chivalrous in the battle, तस्य his, विक्रान्तम् heroic advance, अनुरूपम् worthy of his stature, यथा as such, भवति will be, तथा that manner, त्वम् you, उपपादय act.
"You should act in such a manner that the exalted Rama, who is chivalrous in the battlefield, exhibits his valour worthy of his stature".