Bhagavatapurana 11.23.41

11.23.41

paribhūta imāṃ gāthām agāyata narādhamaiḥ /
pātayadbhiḥ sva dharma-stho dhṛtim āsthāya sāttvikīm //

42. Thus ill-treated by the basest of men bent on forcing him to abandon his saintly course, the brahmin, firm in his own righteous duties and having the fortitude of satvic nature, sang the following song.