Srimad Bhagavatam Canto 07, Chapter 13, Text 37

SB 7.13.37

anihah paritustatma
 yadrcchopanatad aham
no cec chaye bahv-ahani
 mahahir iva sattvavan
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
I do not endeavor to get anything, but am satisfied with whatever is achieved in its own way. If I do not get anything, I am patient and unagitated like a python and lie down in this way for many days.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
One should learn detachment from the bumblebees, for they collect drops of honey here and there and keep it in their honeycomb, but then someone comes and by force takes all the honey away, leaving the bumblebees with nothing. Therefore one should learn from the bumblebee not to keep more money than one needs. Similarly, one should learn from the python to stay in one place for many, many days without food and then eat only if something comes in its own way. Thus the learned brahmana gave instructions gained from two creatures, namely the bumblebee and the python.
Srimad Bhagavatam Canto 07, Chapter 13, Text 36
Srimad Bhagavatam Canto 07, Chapter 13, Text 38