Astanga Hrudaya
रसादिसाम्ये यत् कर्म विशिष्टं तत् प्रभावजम्। दन्ती रसाद्यैस्तुल्याऽपि चित्रकस्य विरेचनी॥२६॥
Prabhava – special effect:- Special action exhibited by a substance over-ruling Rasa (taste), Guna (qualities), Vipaka (taste conversion after digestion) and Veerya (potency) is Prabhava. Though Rasa, Guna, Vipaka, and Veerya in a drug may be similar, sometimes the herb may exhibit entirely different action opposite to these qualities. That special effect of the drug over- ruling inherent qualities is called as Prabhava. Danti and Chitraka – Though Danti – Baliospermum montanum is identical with Chitraka (plumbago zeylanica) in respect of Rasa (taste) etc, Danti is a purgative while Chitraka is not. Hence, purgation is the Prabhava of Danti.
english translation
rasAdisAmye yat karma viziSTaM tat prabhAvajam। dantI rasAdyaistulyA'pi citrakasya virecanI॥26॥
hk transliteration by Sanscript