Vedas are primary/independent pramāṇa (means of knowledge) as regards the truth of oneself, for, all other means of knowledge are about the object, and not the subject. Holding it as such with an open-mind, pending discovery/assimilation of its revelation, is called śraddhā, loosely translated as belief.

A relevant xtract from Swami Paramarthananda lectures…

“We continue to accept the validity of the eyes inspite of occasional optical illusions. Similarly we have to accept the validity of the Veda, in-spite of certain seeming aberrations in certain portions of the Veda. If we reject the eyes because of occasional optical illusions, we are the losers. Similarly, if we reject the Veda because of certain seeming aberrations, we are the losers”.