This man Ajāmila did not undergo atonement. Therefore because of his sinful life, we must take him into the presence of Yamarāja for punishment. There, according to the extent of his sinful acts, he will be punished and thus purified.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तत एनं दण्डपाणेः सकाशं कृतकिल्बिषम् । नेष्यामोऽकृतनिर्वेशं यत्र दण्डेन शुद्ध्यति
tata enaṃ daṇḍapāṇeḥ sakāśaṃ kṛtakilbiṣam | neṣyāmo'kṛtanirveśaṃ yatra daṇḍena śuddhyati
SB 6.1.68