Ramayana
कस्यचित्त्वथ कालस्य वसन्तं रावणं ततः । उक्तवन्तं तथा वाक्यं दशग्रीवं निशाचरः ॥ 7-11-12 ॥
Then, after some time had passed, while Ravana, the ten-necked one, was dwelling there and had spoken such words, the night-roaming rakshasa addressed him.
english translation