130
Śrīmad-Bhāgavatam
[Canto 8, Ch. 4]
insulted a brāhmaṇa. May he therefore enter the region of darkness and receive the dull, dumb body of an elephant.
PURPORT
An elephant is very strong, it has a very big body, and it can work very hard and eat a large quantity of food, but its intelligence is not at all commensurate with its size and strength. Thus in spite of so much bodily strength, the elephant works as a menial servant for a human being. Agastya Muni thought it wise to curse the King to become an elephant because the powerful King did not receive Agastya Muni as one is obliged to receive a  brāhmaṇa . Yet although Agastya Muni cursed Mahārāja Indradyumna to become an elephant, the curse was indirectly a benediction, for by undergoing one life as an elephant, Indradyumna Mahārāja ended the reactions for all the sins of his previous life. Immediately after the expiry of the elephant's life, he was promoted to Vaikuṇṭhaloka to become a personal associate of the Supreme Personality of Godhead, Nārāyaṇa, in a body exactly like that of the Lord. This is called  sārūpyamukti .
TEXTS 11-12
श्रीशुक उवाच
एवं शप्त्वा गतोऽगस्त्यो भगवान् नृप सानुगः । इन्द्रधन्नोऽपि राजर्षिर्दिष्टं तदुपधारयन् ॥११॥ आपन्नः कौञ्जरीं योनिमात्मस्मृतिविनाशिनीम् । हर्यर्चनानुभावेन यद्गजत्वेऽप्यनुस्मृतिः ॥१२॥
śrī-śuka uvāca evam śaptvā gato 'gastyo bhagavān nṛpa sānugaḥ indradyumno 'pi rājarṣir diṣṭam tad upadhārayan
āpannaḥ kauñjarīm yonim ātma-smṛti-vināśinīm hary-arcanānubhāvena yad-gajatve 'py anusmṛtiḥ