Mahabharata 3.149.17
एवमुक्तस्तु भीमेन हनूमान्प्लवगर्षभःप्रत्युवाच ततो वाक्यं स्निग्धगम्भीरया गिरा
evamuktastu bhīmena hanūmānplavagarṣabhaḥpratyuvāca tato vākyaṃ snigdhagambhīrayā girā
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book