The Vishnu Purana
Chapters
The Vishnu Purana: Book I: Chapter XIX

and said to him, "This perverse boy is not to be destroyed by us: do you, who art potent in the arts of delusion, contrive some device for his destruction." Samvara replied, "I will destroy him: you shall behold, king of the Daityas, the power of delusion, the thousand and the myriad artifices that it can employ." Then the ignorant Asura Samvara practised subtile wiles for the extermination of the firm-minded Prahláda: but he, with a tranquil heart, and void of malice towards Samvara, directed his thoughts uninterruptedly to the destroyer of Madhu; by whom the excellent discus, the flaming Sudarsana, was dispatched to defend the youth; and the thousand devices of the evil-destinied Samvara were every one foiled by this defender of the prince. The king of the Daityas then commanded the withering wind to breathe its blighting blast upon his son: and, thus commanded, the wind immediately penetrated into his frame, cold, cutting, drying, and insufferable. Knowing that the wind had entered into his body, the Daitya boy applied his whole heart to the mighty upholder of the earth; and Janárddana, seated in his heart, waxed wroth, and drank up the fearful wind, which had thus hastened to its own annihilation.

When the devices of Samvara were all frustrated, and the blighting wind had perished, the prudent prince repaired to the residence of his preceptor. His teacher instructed him daily in the science of polity, as essential to the administration of government, and invented by Uśanas for the benefit of kings; and when he thought that the modest prince was well grounded in the principles of the science, he told the king that Prahláda was thoroughly conversant with the rules of government as laid down by the descendant of Bhrigu. Hirańyakaśipu therefore summoned the prince to his presence, and desired him to repeat what he had learned; how a king should conduct himself towards friends or foes; what measures he should adopt at the three periods (of advance, retrogression, or stagnation); how he should treat his councillors, his ministers, the officers of his government and of his household, his emissaries, his subjects, those of doubtful allegiance, and his foes; with whom should he contract alliance; with whom engage in war; what sort of fortress he should construct; how forest and mountain tribes should be reduced;

how internal grievances should be rooted out: all this, and what else he had studied, the youth was commanded by his father to explain. To this, Prahláda having bowed affectionately and reverentially to the feet of the king, touched his forehead, and thus replied:--