Mahārāja Yudhiṣṭhira said: O best of the saints among the demigods, O best of spiritual leaders, how did Hiraṇyakaśipu give so much trouble to Prahlāda Mahārāja, the pure and exalted saint, although Prahlāda was his own son? I wish to know about this subject from you.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
युधिष्ठिर उवाच । देवर्ष एतदिच्छामो वेदितुं तव सुव्रत । यदात्मजाय शुद्धाय पितादात्साधवे ह्यघम्
yudhiṣṭhira uvāca | devarṣa etadicchāmo vedituṃ tava suvrata | yadātmajāya śuddhāya pitādātsādhave hyagham
SB 7.4.44