No person shall be excused or excluded from testifying or giving his deposition in any civil cause by reason of his interest therein, as a party or otherwise.
Source. 1857, 1952:1. 1858, 2090:1. GS 209:13. GL 228:13. 1885, 27:1. PS 224:13. PL 336:24. RL 392:22.