AGnEx 3.27 :ܟܬ݂ܒ ܥܠ ܟܝ̈ܢܐ ܕܐܬܒܪܝܘ ܡܢ ܠܐ ܡܕܡ܂ ܕܢܕܥܘܢ ܕܒܙܐܦܐ ܐܝܬ̈‍[‍ܝ‍]‍ܐ ܡܬܟܢܝܢ ܗܘܘ‏ : he wrote about the substances that were created from nothing so that they would know that they have erroneously been termed 'beings'
See the entire entry for ˀīṯē, ˀīṯyā n.m. essence