Shiva Purana
अपि काषायवसनश्चर्मचीराम्बरो ऽथ वा ॥ एकाम्बरो वल्कली वा भवेद्दण्डी च मेखली ॥ २१ ॥
Or he can wear ochre robes, hide or barks of trees. Only a single cloth or a single bark garment shall be worn. He shall have the staff and the girdle.
english translation
api kASAyavasanazcarmacIrAmbaro 'tha vA ॥ ekAmbaro valkalI vA bhaveddaNDI ca mekhalI ॥ 21 ॥
hk transliteration by Sanscript