The Upaniṣads — the philosophical core of the Vedic tradition, revealing the nature of Brahman, the Ātman, knowledge, action and liberation. The ten principal Upaniṣads together with select minor Vaiṣṇava Upaniṣads.
A Śaiva manual on the worship of Dakṣiṇāmūrti — Śiva as the silent teacher seated beneath the fig tree. It gives the mantra, the hand-gesture, and the contemplation; we read it as a book about teaching itself.