Mahabharata 14.81.15

अनाहता दुन्दुभयः प्रणेदुर्मेघनिस्वनाःसाधु साध्विति चाकाशे बभूव सुमहान्स्वनः

anāhatā dundubhayaḥ praṇedurmeghanisvanāḥsādhu sādhviti cākāśe babhūva sumahānsvanaḥ

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