Ramayana
स त्वं पुरुषशार्दूल तमायुधविनाकृतम् । अप्रविष्टं पुरं पूर्वं द्वारि तिष्ठ धृतायुधः ॥ 7-63-28 ॥
"Therefore you, O tiger among men, while he is yet deprived of his weapon and has not entered the city, stand at the gate, weapon in hand."
english translation