About Arsha prayoga

Arsha prayoga is a common term for such linguistic usages in Sanskrit, which although not correct as per grammatical rules, are still exempted and deemed valid on account of their having been used by some ancient sages (rishis). Literally, word Arsha has following derivation:ऋषेरिदम् (अण्).
Rigveda (padapatha) manuscript in Devanagari, early 19th century

Glossary of Sanskrit words & phrases

The following list consists of notable concepts that are derived from Hindu and Buddhist cultures and associated traditions, which are expressed as words in Sanskrit or other Indic languages and Dravidian languages. The main purpose of this list is to make it easy for one to find specific concepts, and to provide a guide to unique concepts of and Buddhism all in one place. Many Sanskrit concepts have an Indian secular meaning as well as .