Valmiki Ramayana 6.51.1
तेषां सुतुमुलं शब्दं वानराणां तरस्विनाम् ।नदतां राक्षसैः सार्धं तदा शुश्राव रावणः॥
teṣāṃ sutumulaṃ śabdaṃ vānarāṇāṃ tarasvinām |nadatāṃ rākṣasaiḥ sārdhaṃ tadā śuśrāva rāvaṇaḥ ||
Our plain-language meaning of this verse is waiting for scholar review.
