OS JnCur8:17 :ܕܣܗܕܘܬܐ ܕܬܪܝܢ ܓܒܪ̈ܝܢ ܫܪܝܪܐ ܗܝ‏ : that the testimony of two men is reliable
See the entire entry for sāhdū, sāhdūṯā n.f. testimony