SB 7.13.1
sri-narada uvaca
kalpas tv evam parivrajya
deha-matravasesitah
gramaika-ratra-vidhina
nirapeksas caren mahim
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Sri Narada Muni said: A person able to cultivate spiritual knowledge should renounce all material connections, and merely keeping the body inhabitable, he should travel from one place to another, passing only one night in each village. In this way, without dependence in regard to the needs of the body, the sannyasi should travel all over the world.