The great saint Nārada Muni said: The demons, headed by Hiraṇyakaśipu, accepted Śukrācārya as their priest for ritualistic ceremonies. Śukrācārya’s two sons, Ṣaṇḍa and Amarka, lived near Hiraṇyakaśipu’s palace.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
नारद उवाच । पौरोहित्याय भगवान् वृतः काव्यः किलासुरैः । षण्डामर्कौ सुतौ तस्य दैत्यराजगृहान्तिके
nārada uvāca | paurohityāya bhagavān vṛtaḥ kāvyaḥ kilāsuraiḥ | ṣaṇḍāmarkau sutau tasya daityarājagṛhāntike
SB 7.5.1