OS MtCur12:4 :ܠܐ ܠܗ ܫܠܝܛ ܗܘܐ ܠܡܐܟܠ ܐܦܠܐ ܠܐܝܠܝܢ ܕܥܡܗ܂ ܐܠܐ ܐܢ ܠܟܗ̈ܢܐ ܒܠܚܘܕ‏ : he is not allowed to eat, nor even those with him, but only the priests
See the entire entry for kāhen, kāhnā n.m. priest