SB 7.12.4
mekhalajina-vasamsi
jata-danda-kamandalun
bibhryad upavitam ca
darbha-panir yathoditam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Carrying pure kusa grass in his hand, the brahmacari should dress regularly with a belt of straw and with deerskin garments. He should wear matted hair, carry a rod and waterpot and be decorated with a sacred thread, as recommended in the sastras.