SB 7.13.11
atrapy udaharantimam
itihasam puratanam
prahradasya ca samvadam
muner ajagarasya ca
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
As a historical example of this, learned sages recite the story of an ancient discussion between Prahlada Maharaja and a great saintly person who was feeding himself like a python.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The saintly person met by Prahlada Maharaja was undergoing ajagara-vrtti, the living conditions of a python, which does not go anywhere but sits in one place for years and eats whatever is automatically available. Prahlada Maharaja, along with his associates, met this great saint and spoke to him as follows.