Valmiki Ramayana 2.80.20

विसर्पत्भिर् इव आकाशे विटन्क अग्र विमानकैः ।समुच्च्रितैः निवेशाः ते बभुः शक्र पुर उपमाः॥

visarpatbhir iva ākāśe viṭanka agra vimānakaiḥ |samuccritaiḥ niveśāḥ te babhuḥ śakra pura upamāḥ ||

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