Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 9
Sanskrit:
रक्ष:स्वसुर्व्यकृत रूपमशुद्धबुद्धे-स्तस्या: खरत्रिशिरदूषणमुख्यबन्धून् ।जघ्ने चतुर्दशसहस्रमपारणीय-कोदण्डपाणिरटमान उवास कृच्छ्रम् ॥ ९ ॥
ITRANS:
rakṣaḥ-svasur vyakṛta rūpam aśuddha-buddhestasyāḥ khara-triśira-dūṣaṇa-mukhya-bandhūnjaghne caturdaśa-sahasram apāraṇīya-kodaṇḍa-pāṇir aṭamāna uvāsa kṛcchram
Translation:
While wandering in the forest, where He accepted a life of hardship, carrying His invincible bow and arrows in His hand, Lord Rāmacandra deformed Rāvaṇa’s sister, who was polluted with lusty desires, by cutting off her nose and ears. He also killed her fourteen thousand Rākṣasa friends, headed by Khara, Triśira and Dūṣaṇa.