Charak Samhita
स्तब्धानि सुप्तसुप्तान्यस्वेदनकण्डुलानि कुष्ठानि। कूर्चैर्दन्तीत्रिवृताकरवीरकरञ्जकुटजानाम् ॥५६॥
If there is numbness around the patch of kushtha associated with complete loss of sensation along with anhidrosis, and pruritus then for scrubbing in such condition brush (kurcha) prepared from danti, trivrita, karavira, karanja, kutaja
english translation
stabdhAni suptasuptAnyasvedanakaNDulAni kuSThAni। kUrcairdantItrivRtAkaravIrakaraJjakuTajAnAm ॥56॥
hk transliteration by Sanscript