What are the key Hindu scriptures?: The basic scriptures of Hinduism, which is collectively referred to as "Shastras", are essentially a collection of spiritual laws discovered by different saints and sages at different points in its long history. The Two types of sacred writings comprise the Hindu scriptures: "Shruti" (heard) and "Smriti" (memorized). They were passed on from generation to generation orally for centuries before they were written down mostly in the Sanskrit language. The major and most popular Hindu texts include the Bhagavad Gita, the Upanishads, and the epics of Ramayana and Mahabharata.