Agastya Muni then spoke this curse against the King: This King Indradyumna is not at all gentle. Being low and uneducated, he has insulted a brāhmaṇa. May he therefore enter the region of darkness and receive the dull, dumb body of an elephant.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तस्मा इमं शापमदादसाधु- रयं दुरात्माकृतबुद्धिरद्य । विप्रावमन्ता विशतां तमोऽन्धं यथा गजः स्तब्धमतिः स एव
tasmā imaṃ śāpamadādasādhu- rayaṃ durātmākṛtabuddhiradya | viprāvamantā viśatāṃ tamo'ndhaṃ yathā gajaḥ stabdhamatiḥ sa eva
SB 8.4.10