O best of conchshells, O Pāñcajanya in the hands of the Lord, you are always filled with the breath of Lord Kṛṣṇa. Therefore you create a fearful sound vibration that causes trembling in the hearts of enemies like the Rākṣasas, pramatha ghosts, Pretas, Mātās, Piśācas and brāhmaṇa ghosts with fearful eyes.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
त्वं यातुधानप्रमथप्रेतमातृ- पिशाचविप्रग्रहघोरदृष्टीन् । दरेन्द्र विद्रावय कृष्णपूरितो भीमस्वनोऽरेर्हृदयानि कम्पयन्
tvaṃ yātudhānapramathapretamātṛ- piśācavipragrahaghoradṛṣṭīn | darendra vidrāvaya kṛṣṇapūrito bhīmasvano'rerhṛdayāni kampayan
SB 6.8.25