svatah-pramana veda satya yei kaya
'laksana' karile svatah-pramanya-hani haya
svatah-pramana—self-evidence; veda—Vedic literature; satya—truth; yei—whatever; kaya—say; laksana—interpretation; karile—by making; svatah-pramanya—self-evidential proof; hani—lost; haya—becomes.
"The Vedic statements are self-evident. Whatever is stated there must be accepted. If we interpret according to our own imagination, the authority of the Vedas is immediately lost."
Out of four main types of evidence-direct perception, hypothesis, historical reference and the Vedas-Vedic evidence is accepted as the foremost. If we want to interpret the Vedic version, we must imagine an interpretation according to what we want to do. First of all, we set forth such an interpretation as a suggestion or hypothesis. As such, it is not actually true, and the self-evident proof is lost.
Srila Madhvacarya, commenting on the aphorism drsyate tu (Vedanta-sutra 2.1.6), quotes the Bhavisya Purana as follows:
veda ity eva sabditah
puranani ca yaniha
vaisnavani vido viduh
natra kincid vicaryate
The Rg Veda, Yajur Veda, Sama Veda, Atharva Veda, Mahabharata, Pancaratra and original Ramayana are all considered Vedic literature. The Puranas (such as the Brahma-vaivarta Purana, Naradiya Purana, Visnu Purana and Bhagavata Purana) are especially meant for Vaisnavas and are also Vedic literature. As such, whatever is stated within the Puranas, Mahabharata and Ramayana is self-evident. There is no need for interpretation. The Bhagavad-gita is also within the Mahabharata; therefore all the statements of the Bhagavad-gita are self-evident. There is no need for interpretation, and if we do interpret, the entire authority of the Vedic literature is lost.
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