Pramana

(Sanskrit प्रमाण) "Right knowledge, right perception, proof, authority, correct notion, measure, unity."

"Pramana [right knowledge] is direct perception, or inference, or testimony." - Patanjali, Yoga Sutra 1:7

"The following are the Pramanas (proofs of knowledge) of Vedanta:

1. Pratyaksha Pramana (direct proof)

2. Anumana (inference)

3. Sabda Pramana (testimony of the Vedas and realised persons)

4. Upamana (simile)

5. Arthapatti (presumption), and

6. Anupalabdhi (knowledge of non-existence)" - Swami Sivananda, Self-Knowledge