Śrīmad-Bhāgavatam · Text 11.7.39
Who is speaking and story frame
प्राणवृत्त्यैव सन्तुष्येन्मुनिर्नैवेन्द्रियप्रियै: ।
ज्ञानं यथा न नश्येत नावकीर्येत वाङ्मन: ॥ ३९ ॥
prāṇa-vṛttyaiva santuṣyen
munir naivendriya-priyaiḥ
jñānaṁ yathā na naśyeta
nāvakīryeta vāṅ-manaḥ
A learned sage should take his satisfaction in the simple maintenance of his existence and should not seek satisfaction through gratifying the material senses. In other words, one should care for the material body in such a way that one’s higher knowledge is not destroyed and so that one’s speech and mind are not deviated from self-realization.
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.