Charak Samhita
अष्टौनिन्दितसङ्ख्यातस्तथा लङ्घनतर्पणे। विधिशोणितिकश्चैव व्याख्यातास्तत्र योजनाः ॥४१॥
21. Eight types of inappreciable persons; 22. Lightening and nourishing therapies; 23. Refreshing regimen; 24. Blood purification and the regimen, therefore; The above mentioned four chapters constitute the tetrad on therapeutics.
english translation
aSTauninditasaGkhyAtastathA laGghanatarpaNe। vidhizoNitikazcaiva vyAkhyAtAstatra yojanAH ॥41॥
hk transliteration by Sanscript