While showing his extraordinary prowess, Hiraṇyakaśipu, who desired to kill his own son, heard that wonderful, tumultuous sound, which had never before been heard. Upon hearing the sound, the other leaders of the demons were afraid. None of them could find the origin of that sound in the assembly.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तदैव तस्मिन्निनदोऽतिभीषणो बभूव येनाण्डकटाहमस्फुटत् । यं वै स्वधिष्ण्योपगतं त्वजादयः श्रुत्वा स्वधामात्ययमङ्ग मेनिरे
tadaiva tasminninado'tibhīṣaṇo babhūva yenāṇḍakaṭāhamasphuṭat | yaṃ vai svadhiṣṇyopagataṃ tvajādayaḥ śrutvā svadhāmātyayamaṅga menire
SB 7.8.16