Shiva Purana
अस्य रोगस्य भैषज्यं ज्ञानमेव न चापरम् ॥ भिषगाज्ञापकः शम्भुश्शिवः परमकारणम् ॥ ८१ ॥
The medicine for this ailment is the perfect knowledge of Śiva and nothing else. The physician is the lord Śiva himself who heals the sufferer.
english translation
asya rogasya bhaiSajyaM jJAnameva na cAparam ॥ bhiSagAjJApakaH zambhuzzivaH paramakAraNam ॥ 81 ॥
hk transliteration by Sanscript