Every future interest is void which suspends the absolute power of alienation for a longer period than is prescribed in this code. A power of alienation is suspended when there are no persons in being by whom an absolute interest in possession can be conveyed.

Source: CivC 1877, § 202; CL 1887, § 2718; RCivC 1903, § 225; RC 1919, § 295; SDC 1939, § 51.0232; SL 1983, ch 304, § 7.