The most sacred of all Hindu texts are the Vedas. There are 4 Vedas. In addition, there are other texts that are meant to be read with the Vedas to fully understand them, which are called Veda-angas or limbs of the Vedas. Also, the text related to Aagama and Tantra are integral to religious practices of the temple. There are also other texts like the Puraanas, and the Itihaasas (Raamayana and Mahaabhaarata), and various philosophical texts, and Bhagavad Gita (which is a part of the Mahaabhaarata) and Brahma-Sutras, which are considered sacred texts.
