South Dakota Codified Laws
Chapter 01 - The Nature Of Obligations
Section 20-1-1 - Obligation defined.

20-1-1. Obligation defined.
An obligation is a legal duty by which a person is bound to do or not to do a certain thing.

Source: CivC 1877, §798; CL 1887, §3421; RCivC 1903, §1114; RC 1919, §721; SDC 1939, §47.0101.