21-1-12. Acceptance of principal as waiver of interest.Accepting payment of the whole principal, as such, waives all claim to interest. Source: CivC 1877, §1945; CL 1887, §4579; RCivC 1903, §2291; RC 1919, §1964; SDC 1939 & Supp 1960, §37.1713.
South Dakota Legal Code