Agastya Samhita is teachings for moksha given by Agastya Maharshi to Rishi Sutheekshna. This book belongs to Tantra-shastra and Dharma-shastra. Mantra, yantra, mudra, nyasa, puja, havan, purascharana, etc. of Lord Rama are given in this book along with mantras of Lakshmana and Hanuman. The yoga marga is also given in this book in a very simple manner.