OS MtCur15:11 :ܡܕܡ ܕܢܦܩ ܡܢ ܦܘܡܐ ܗܘ ܗܘ ܡܣܝܒ ܠܗ ܠܒܪܢܫܐ‏ : whatever goes out of the mouth, that is what defiles a person
See the entire entry for sˀb vb. D to defile, to dirty