When the child grew, Prahlada was admitted to the school run by Hiranyakasipu where the students were taught to worship Hrianyakasipu instead of God Vishnu. Each student was compelled to recite as Hiranya Kasipaya Namaha. Prahlada rebelled and started chanting 'Om Namo Narayanaya' to the utter fear of his teachers. Coming to know that his own son had disobeyed him and was instigating other students to follow suit, Hiranyakasipu wanted to kill Prahlada and tried in vain by ordering him to be killed by noxious reptiles, throwing him in the sea, fire, before an elephant, rolling him from the mountain tops. Finally, he asked his wife Kayathu to administer poison. Prahlada, with unwavering belief and faith faced all the punishments and came out from all problems without any difficulty having been protected by Narayana in whom Prahlada had immense faith. Irritated and angered by the inability of others in killing his son, Hiranyakasipu himself challenged Prahlada to show him his staunch enemy in whom Prahlada deposes confidence. Prahlada said that Hari is omnipresent and can be seen anywhere. Hiranyakasipu asked whether Prahlada could show his enemy in the pillar in his Durbar Hall. Prahlada readily said that Hari is in the pillar too.
Prahlada said 'Narayana' is in the pillar and went on to say that he is in the word spoken by Hiranyakasipu too. Vexed with the words of his son, Hiranyakasipu attacked the pillar with his sword and out came a form with a ferocious head of a lion and strong and healthy body of a man. There was a severe fight going on between the two. At dusk, the lion man struck Hiranyakasipu down and dragged his body to the door steps.
Describing this scene in Srimad Bhaghavatham, Sage Vyasa says as follows.
"Sathyam Vidhathum Nija Brithya Bashitham
Vyapthim Cha Bootheshu Akileshu Cha Aathmana:
Adhrishyath Athyathbutha Roopam Udvahan
Sthambe Sabayam Na Mrigam Na Maanushami".
To make the words of his devotee servant's tone, all pervading the entire universe taking the form of which none has ever seen before and the form of wonder of wonders, in the Durbar hall neither an animal nor a man, god appeared.