Charak Samhita
अवगाढरुजाक्लेदा पृष्ठे वाऽप्युदरेऽपि वा। महती विनता नीला पिडका विनता मता ॥८९॥
॥ 6. Vinata॥ Vinatā pidika is extremely painful form of pustule. It is soft, situated either on back or abdomen, very extensive and depressed in the middle and bluish in colour. It is known as vinata because it is depressed or deep
english translation
avagADharujAkledA pRSThe vA'pyudare'pi vA। mahatI vinatA nIlA piDakA vinatA matA ॥89॥
hk transliteration by Sanscript