Valmiki Ramayana Yuddha Kanda Sarga 63 Shloka 22

दशग्रीवःतु ten headed Ravana, कुम्भकर्णस्य Kumbhakarna's, तत् that, भाषितम् spoken, श्रुत्वा having heard, भ्रुकुटिम् eyebrows, सञ्चक्रे shaking frowned, क्रुद्धश्च in anger, एनम् this way, अभाषत spoke.

Kumbhakarna having spoken that way, the ten headed Ravana frowned, shaking his eyebrows in anger and spoke this way.