51. ingum uNdu enREnO prahlAdhanaip pOlE

The asuras Hiranyaksha and Hiranyakashipu were brothers. They were both very cruel. Hiranyaksha hid the world under the ocean and Sriman Narayana took the Varaha avatara to restore it; after doing that, He also killed Hiranyaksha. Due to that, Hiranyakashpu developed great hatred toward Him. He performed great penance toward Brahma, obtained several boons from him and started ruling this world and Indraloka. He then put forth the command that no one should worship Sriman Narayana and instead everyone should worship him.

Prahlada was the son of Hiranyakashipu. Despite being born to this evil asura, Prahlada was a great devotee of Sriman Narayana. While the teachers of Hiranyakashipu's land taught all children that Hiranya was the supreme power, Prahlada prayed only to Narayana and also taught the same to the children in his gurukula.

This infuriated Hiranya and he began many attempts at torturing and even killing Prahlada - such as using weapons, having poisonous snakes bite him, curshing him with elephants, throwing him from a mountain-top, throwing him in fire, into the ocean, etc. Prahlada's mind was always set on Narayana and as such Hiranya was unable to do anything to him.

In spite of everything that Hiranya did to him, Prahlada showed no anger toward him. Instead he advised Hiranya "Vishnu is the antaryami to everything in this universe. Being that the case, where is the idea of considering some as friends and some as enemies. Just as He is inside me, so too He is inside you. He is present everywhere."

At that time, Hiranya showed a pillar and asked Prahlada if He was in it. Prahlada answered that He was everywhere including that pillar. When Hiranya wrecked that pillar, Sriman Narayana appeared as Narasimha and killed Hiranya by ripping him with his finger nails.

Nammazhvar celebrates this event:
engum uLan kaNNan enRa maganayk kAyndhu
ingu illaiyA en iraNiyan thUN pudaippa
angu appozhudhE avan vIyath thOnRiya en
singap pirAn perumai ArAyum sIrmaiththE

Thirukkolur Ammal is asking "Did I say with great conviction that He is everywhere including here (in this pillar), like Prahlada did?"