अस्त्रेणोन्मुक्तमात्मानं ज्ञात्वा पैतामहाद्वरात्।
मर्षयन्राक्षसान्वीरो यन्त्रिणस्तान्यदृच्छया॥
ततो दग्ध्वा पुरीं लङ्कामृते सीतां च मैथिलीम्।
रामाय प्रियमाख्यातुं पुनरायान्महाकपिः॥
astreṇonmuktam ātmānaṁ jñātvā paitāmahād varāt
marṣayan rākṣasān vīro yantriṇas tān yadṛcchayā
tato dagdhvā purīṁ laṅkām ṛte sītāṁ ca maithilīm
rāmāya priyam ākhyātuṁ punar āyān mahā-kapiḥ
astreṇa = from the brahmāstra; unmuktam = released; ātmānam = that he was; jñātvā = got to know; paitāmahāt = by Brahmā’s; varāt = boon; marṣayan = forgiving the offenses of; rākṣasān = rākṣasas; vīraḥ = heroic; yantriṇaḥ = whp had tied him up and who had dragging him here and there; tān = the; yadṛcchayā = with no effort from his end; tataḥ dagdhvā = he burnt; purīm = the city; laṅkām = of Laṅkā; ṛte = except; sītām = Sītā; ca maithilīm = [the residence of] the princess of Mithilā; rāmāya = Rāma; priyam = of the good news about Sītā; ākhyātum = to inform; punaḥ āyān = returned; mahā-kapiḥ = burnt.
The heroic great monkey Hanumān got to know that he was released from the brahmāstra by Brahmā’s boon with no effort from his end. Forgiving the offenses of the rākṣasas who had tied him up and who were dragging him here and there, he burnt the city of Laṅkā, except [the residence of] the princess of Mithilā, and returned to inform Rāma of the good news [about Sītā].
Hanumān certainly became a famous hero because of assaulting Laṅkā that was protected by Rāvaṇa, the Laṅkā that could not be assaulted by the suras or the asuras. He was a great monkey for he could kill many rākṣasas without getting hurt. Sītā alone was not burnt by the influence of her dynasty. Hanumān returned to inform Rāmacandra of the good news of having met Sītā-devī.