Sundar Kand Verse 288
जो संपति सिव रावनहि दीन्हि दिएँ दस माथ । सोइ संपदा बिभीषनहि सकुचि दीन्ह रघुनाथ ॥49 (ख)॥
jo saṃpati siva rāvanahi dīnhi die~ dasa mātha | soi saṃpadā bibhīṣanahi sakuci dīnha raghunātha ||49 (kha)||
jo sampati siva ravanahi dinhi die~ dasa matha soi sampada bibhishanahi sakuci dinha raghunatha 49 (kha)
The very wealth that Shiva had given Ravana in exchange for his ten heads, that same prosperity Raghunatha bestowed upon Vibhishana — humbly, as if it were too little a gift.
शिव ने जो वैभव दस शीश अर्पित करने पर रावण को दिया था, वही संपदा रघुनाथ ने संकोच के साथ (मानो यह पर्याप्त नहीं) विभीषण को प्रदान की।
This is verse 288 of 351 in Sundar Kand (सुन्दरकाण्ड), from the section “Vibhishana's Refuge & Coronation” of Goswami Tulsidas’ Ramcharitmanas.