IshLevit 61:28 :ܗܟܢ ܘܗܢܘܢ ܐܢ ܠܐ ܡܠܚܝܢ ܢܦܫܗܘܢ ܒܗܝܡܢܘܬܐ ܘܒܝܕܥܬܐ ܕܐܠܗܐ‏ : thus are they, too, if they they do not salt themselves with faith and knowledge of God
See the entire entry for mlḥ vb. to salt