GregOr 41 28.2.42 : ܙ݁ܕܩ ܓܝܪ݂ ܕܬܡܢ ܢܫܬ݁ܠܡ ܫܘܒܬܐ ܕܗܪܟܐ ܕܢ̈ܦܫܬܐ‏ : for it is proper that our present Sabbath rest of the souls should be fulfilled there
See the entire entry for šwbt v.n.D Sabbath rest