SB 7.5.28
sri-guru-putra uvaca
na mat-pranitam na para-pranitam
suto vadaty esa tavendra-satro
naisargikiyam matir asya rajan
niyaccha manyum kad adah sma ma nah
.
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The son of Sukracarya, Hiranyakasipu’s spiritual master, said: O enemy of King Indra, O King! Whatever your son Prahlada has said was not taught to him by me or anyone else. His spontaneous devotional service has naturally developed in him. Therefore, please give up your anger and do not unnecessarily accuse us. It is not good to insult a brahmana in this way.