Bhagavatapurana 7.13.36

7.13.36

anīhaḥ parituṣṭātmā yadṛcchopanatādaham /
no cec chaye bahvahāni mahāhiriva sattvavān //

36. Having desisted from all activity, I am contented with what I get by chance; if I do not get anything I lie down like the great serpent with an undaunted mind in my own strength for many days.