Srimad Bhagavatam Canto 07, Chapter 05, Text 29

SB 7.5.29

sri-narada uvaca
gurunaivam pratiprokto
 bhuya ahasurah sutam
na ced guru-mukhiyam te
 kuto ’bhadrasati matih
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Sri Narada Muni continued: When Hiranyakasipu received this reply from the teacher, he again addressed his son Prahlada. Hiranyakasipu said: You rascal, most fallen of our family, if you have not received this education from your teachers, where have you gotten it?
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Srila Visvanatha Cakravarti Thakura explains that devotional service is actually bhadra sati, not abhadra asati. In other words, knowledge of devotional service can be neither inauspicious nor contrary to etiquette. To learn devotional service is the duty of everyone. Therefore the spontaneous education of Prahlada Maharaja is supported as auspicious and perfect.
Srimad Bhagavatam Canto 07, Chapter 05, Text 28
Srimad Bhagavatam Canto 07, Chapter 05, Text 30