Srimad Bhagavatam Canto 07, Chapter 13, Text 02

SB 7.13.2

bibhryad yady asau vasah
 kaupinacchadanam param
tyaktam na lingad dandader
 anyat kiñcid anapadi
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
A person in the renounced order of life may try to avoid even a dress to cover himself. If he wears anything at all, it should be only a loincloth, and when there is no necessity, a sannyasi should not even accept a danda. A sannyasi should avoid carrying anything but a danda and kamandalu.
Srimad Bhagavatam Canto 07, Chapter 13, Text 01
Srimad Bhagavatam Canto 07, Chapter 13, Text 03