Mahabharata 5.139.35
शङ्खशब्दाः समुरजा भेर्यश्च मधुसूदनउत्कृष्टसिंहनादाश्च सुब्रह्मण्यो भविष्यति
śaṅkhaśabdāḥ samurajā bheryaśca madhusūdanautkṛṣṭasiṃhanādāśca subrahmaṇyo bhaviṣyati
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book