Srimad Bhagavatam Canto 07, Chapter 05, Text 08

SB 7.5.8

grham anitam ahuya
 prahradam daitya-yajakah
prasasya slaksnaya vaca
 samaprcchanta samabhih
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
When Hiranyakasipu’s servants brought the boy Prahlada back to the gurukula [the place where the brahmanas taught the boys], the priests of the demons, Sanda and Amarka, pacified him. With very mild voices and affectionate words, they inquired from him as follows.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Sanda and Amarka, the priests of the demons, were eager to know from Prahlada Maharaja who the Vaisnavas were that came to instruct him in Krsna consciousness. Their purpose was to discover the names of these Vaisnavas. In the beginning they did not threaten the boy because when threatened he might not identify the real culprits. Therefore they very mildly and peacefully inquired as follows.
Srimad Bhagavatam Canto 07, Chapter 05, Text 07
Srimad Bhagavatam Canto 07, Chapter 05, Text 09