Charak Samhita
दीर्घञ्जीवोऽप्यपामार्गतण्डुलारग्वधादिकौ। षड्विरेकाश्रयश्चेति चतुष्को भेषजाश्रयः ॥३६॥
The names of chapters are: 1. The quest for longevity; 2. Dehusked seed of Apamarga (Achyranthes aspera Linn); 3. Aragvadha (Cassia fistula Linn) 4. Six hundred purgatives; This marks the end of the tetrad on drugs.
english translation
dIrghaJjIvo'pyapAmArgataNDulAragvadhAdikau। SaDvirekAzrayazceti catuSko bheSajAzrayaH ॥36॥
hk transliteration by Sanscript