All the magical charms being thus baffled, the wind being thus annihilated, the high-minded Prahlāda again repaired to the abode of his preceptor. And the preceptor instructed that boy daily in the science of polity essentially necessary for the administration of the government and invented by Usanas for the behoof of kings.

In plain words: With all attacks defeated, Prahlada goes back to his teacher, who teaches him every day the science of government written by Usanas (Shukra, teacher of the demons) for kings.