Valmiki Ramayana 6.42.13

प्रेक्षतो राक्षसेन्द्रस्य तान्यनीकानि भागशः ।राघवप्रियकामार्थं लङ्कामारुरुहुस्तदा॥

prekṣato rākṣasendrasya tānyanīkāni bhāgaśaḥ |rāghavapriyakāmārthaṃ laṅkāmāruruhustadā ||

Our plain-language meaning of this verse is waiting for scholar review.