Valmiki Ramayana 7.107.6
सत्येनाहं शपे राजन्स्वर्गलोके न चैव हि ।न कामये यथा राज्यं त्वां विना रघुनन्दन॥
satyenāhaṃ śape rājansvargaloke na caiva hi |na kāmaye yathā rājyaṃ tvāṃ vinā raghunandana ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book