After hearing these instructions of Ṣaṇḍa and Amarka, the sons of his spiritual master, Hiraṇyakaśipu agreed and requested them to instruct Prahlāda in that system of occupational duty which is followed by royal householder families.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तथेति गुरुपुत्रोक्तमनुज्ञायेदमब्रवीत् । धर्मा ह्यस्योपदेष्टव्या राज्ञां यो गृहमेधिनाम्
tatheti guruputroktamanujñāyedamabravīt | dharmā hyasyopadeṣṭavyā rājñāṃ yo gṛhamedhinām
SB 7.5.51