Śrīmad-Bhāgavatam · Text 11.11.17
न कुर्यान्न वदेत् किञ्चिन्न ध्यायेत् साध्वसाधु वा ।
आत्मारामोऽनया वृत्त्या विचरेज्जडवन्मुनि: ॥ १७ ॥
na kuryān na vadet kiñcin
na dhyāyet sādhv asādhu vā
ātmārāmo ’nayā vṛttyā
vicarej jaḍa-van muniḥ
For the purpose of maintaining his body, a liberated sage should not act, speak or contemplate in terms of material good or bad. Rather, he should be detached in all material circumstances, and taking pleasure in self-realization, he should wander about engaged in this liberated lifestyle, appearing like a retarded person to outsiders.
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.