Trivrt and Vatsaka in the Charaka Samhita Kalpa Sthana: The Root Ranked Best for Virechana, Its Two Colours, and Chapters That Audit Themselves anupana
Vajikarana in the Charaka Samhita (Chikitsa Sthana, Chapter 2): The Classical Science of Shukra Dhatu, Vrishya Herbs and Vitality ashwagandha