South Dakota Codified Laws
Chapter 09 - Actions For Specific Performance
Section 21-9-4 - Mutuality of remedy or full performance by plaintiff required for specific performance.

21-9-4. Mutuality of remedy or full performance by plaintiff required for specific performance.
Neither party to an obligation can be compelled specifically to perform it, unless the other party thereto has performed, or is compellable specifically to perform, everything to which the former is entitled under the same obligation, either completely or nearly so, together with full compensation for any want of entire performance.

Source: CivC 1877, §1995; CL 1887, §4628; RCivC 1903, §2340; RC 1919, §2011; SDC 1939 & Supp 1960, §37.4604.