śāstrī

The term "shastra" (or śāstra) refers to sacred scriptures in Hinduism, encompassing four categories of texts: sruti, smriti, purana, and tantra. The word itself originates from Sanskrit, meaning "instruction".1

Separately, "Shastri" is a title of honor, often used before the name of a distinguished Indian person, similar to "Mr." or "Sir". It can also be a surname. For example, Lal Bahadur Shastri was an Indian independence activist and statesman who served as India's second prime minister. He earned the title shastri ("learned in the scriptures") after graduating from a nationalist university.23