Nārada Muni continued: All the sons of the demons appreciated the transcendental instructions of Prahlāda Mahārāja and took them very seriously. They rejected the materialistic instructions given by their teachers, Ṣaṇḍa and Amarka.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
नारद उवाच । अथ दैत्यसुताः सर्वे श्रुत्वा तदनुवर्णितम् । जगृहुर्निरवद्यत्वान्नैव गुर्वनुशिक्षितम्
nārada uvāca | atha daityasutāḥ sarve śrutvā tadanuvarṇitam | jagṛhurniravadyatvānnaiva gurvanuśikṣitam
SB 7.8.1