Srimad Bhagavatam — Saptama Skandha, Shloka 16
Nṛsiṁhadeva Appears from the Pillar and Slays Hiraṇyakaśipu
स विक्रमन् पुत्रवधेप्सुरोजसा निशम्य निर्ह्रादमपूर्वमद्भुतम् । अन्त:सभायां न ददर्श तत्पदं वितत्रसुर्येन सुरारियूथपा: ॥ १६ ॥
sa vikraman putra-vadhepsur ojasā niśamya nirhrādam apūrvam adbhutam antaḥ-sabhāyāṁ na dadarśa tat-padaṁ vitatrasur yena surāri-yūtha-pāḥ
希兰尼亚迦西普一心要杀子，正逞其凶威之时，忽听见前所未闻、奇异而震荡的轰鸣。殿中无人能寻得那声音的来处，诸阿修罗首领也因恐惧而战栗。
In Bhagavad-gītā (7.8) , Kṛṣṇa explains Himself by saying:
FAQs
It signifies the imminent manifestation of Lord Nṛsiṁhadeva—an unprecedented divine sound that terrifies the asuras and signals that the Lord is about to protect Prahlāda.
Because the roar was supernatural—beyond ordinary perception—showing that the Lord’s presence and power are not confined to material logic or visible locations.
When oppression or fear rises, remember that divine protection can appear unexpectedly; stay steady in devotion like Prahlāda and rely on dharma rather than panic.