Charak Samhita
निष्ठ्यूते यस्य दृश्यन्ते वर्णा बहुविधाः पृथक्। तच्च सीदत्यपः प्राप्य न स जीवितुमर्हति ॥१९॥
॥ Poor prognosis based on discoloration of sputum॥ If the sputum has various color and sinks in water, the patient does not survive.
english translation
niSThyUte yasya dRzyante varNA bahuvidhAH pRthak। tacca sIdatyapaH prApya na sa jIvitumarhati ॥19॥
hk transliteration by Sanscript