Śrīmad-Bhāgavatam · Text 11.21.3
Who is speaking and story frame
शुद्ध्यशुद्धी विधीयेते समानेष्वपि वस्तुषु ।
द्रव्यस्य विचिकित्सार्थं गुणदोषौ शुभाशुभौ ।
धर्मार्थं व्यवहारार्थं यात्रार्थमिति चानघ ॥ ३ ॥
śuddhy-aśuddhī vidhīyete
samāneṣv api vastuṣu
dravyasya vicikitsārthaṁ
guṇa-doṣau śubhāśubhau
dharmārthaṁ vyavahārārthaṁ
yātrārtham iti cānagha
O sinless Uddhava, in order to understand what is proper in life one must evaluate a given object within its particular category. Thus, in analyzing religious principles one must consider purity and impurity. Similarly, in one’s ordinary dealings one must distinguish between good and bad, and to insure one’s physical survival one must recognize that which is auspicious and inauspicious.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.