Valmiki Ramayana 7.25.2
ततो निकुम्भिला नाम लङ्कोपवनमुत्तमम् ।तद्राक्षसेन्द्रो बलवान्प्रविवेश सहानुगः॥
tato nikumbhilā nāma laṅkopavanamuttamam |tadrākṣasendro balavānpraviveśa sahānugaḥ ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book