Charak Samhita
कषायमधुराः शीताः सेकास्तत्र सबस्तयः। अतिमात्रप्रणीतेन नेत्रेण क्षणनाद्वलेः॥१५॥
Seka (pouring) and basti has to be dome with medicines having astringent and sweet taste and in cold state. [Ati dosha (excessive deep insertion)] Extensive deep insertion of netra into guda inflicts injury to gudavali and results in pain,
english translation
kaSAyamadhurAH zItAH sekAstatra sabastayaH। atimAtrapraNItena netreNa kSaNanAdvaleH॥15॥
hk transliteration by Sanscript