A saintly person should remain alone and constantly travel without any fixed residence. Being alert, he should remain secluded and should act in such a way that he is not recognized or noticed by others. Moving without companions, he should not speak more than required.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
एकचार्यनिकेतः स्यादप्रमत्तो गुहाशयः । अलक्ष्यमाण आचारैर्मुनिरेकोऽल्पभाषणः
ekacāryaniketaḥ syādapramatto guhāśayaḥ | alakṣyamāṇa ācārairmunireko'lpabhāṣaṇaḥ
SB 11.9.14