They (the teachers of Prahlada) inquired about the Vaisnavas who stealthily taught it (Vaisnava philosophy) to him, in order that these Vaisnavas might be arrested and killed in the presence of Prahlada's father, Hiranyakasipu

Expressions researched:
"they inquired about the Vaiṣṇavas who stealthily taught it to him, in order that these Vaiṣṇavas might be arrested and killed in the presence of Prahlāda's father, Hiraṇyakaśipu"

Srimad-Bhagavatam

SB Canto 7

They inquired about the Vaiṣṇavas who stealthily taught it to him, in order that these Vaiṣṇavas might be arrested and killed in the presence of Prahlāda's father, Hiraṇyakaśipu.

SB 7.5.10, Translation and Purport

O best of your family, has this pollution of your intelligence been brought about by you or by the enemies? We are all your teachers and are very eager to hear about this. Please tell us the truth.

Prahlāda Mahārāja's teachers were astonished that a small boy could speak such exalted Vaiṣṇava philosophy. Therefore they inquired about the Vaiṣṇavas who stealthily taught it to him, in order that these Vaiṣṇavas might be arrested and killed in the presence of Prahlāda's father, Hiraṇyakaśipu.