1. Charaka Samhita: Charaka Samhita mentions Ashwagandha as a "Rasayana" herb, which means a substance that promotes health and longevity.
2. Sushruta Samhita: Sushruta Samhita describes Ashwagandha as a herb that promotes sound sleep, increased stamina, and a sharp memory.
3. Bhavprakash Nighantu: Bhavprakash Nighantu mentions Ashwagandha as a herb that promotes physical and mental strength, improves sleep, and helps balance the "Vata" and "Pitta" doshas.