Wikipedia
Vyavahāra is an important concept of Hindu law denoting legal procedure. The term is analyzed by Kātyāyana as follows: "Vi means ‘various,’ ava means ‘doubt,’ hara is ‘removal’; legal procedure is called by the term vyavahāra because ‘it removes various doubts.’” Kane defines it as follows: "When the ramifications of right conduct, that are together called dharma and that can be established with efforts (of various kinds such as truthful speech, etc.) have been violated, the dispute (in a court between parties) which springs from what is sought to be proved (such as debt), is said to be vyavahāra." According to Donald Davis, “There are two basic meanings of vyavahāra. The first is a general sense of practice, business, or everyday transactions. The other, specific sense is legal procedure, the processes of litigation including a trial.” Legal procedure according to the dharmaśāstras includes: court, listening to and assessing witnesses and their testimony, deciding and enforcing punishment, and the pursuit of Justice in the face of Injustice. Davis later quotes the in an attempt to answer the question why legal procedure came about in the Hindu tradition. The text states, “When men had dharma as their only focus and were speakers of the truth, there was no legal procedure, no enmity, and no (selfish) conflict. Legal procedure came into being when dharma was lost among men."