S.D. Codified Laws § 43-37-7 (2026)
The borrower of a thing for use must not part with it to a third person without the consent of the lender.
Source: CivC 1877, § 1081; CL 1887, § 3705; RCivC 1903, § 1401; RC 1919, § 1024; SDC 1939, § 38.0208.