JSBhom 126:173 :ܕܲܒܝܲܕ ܨܲܘܡܵܐ ܢܸܬܟܲܬܲܫ ܗ̄ܘܵܐ ܥܲܡ ܨܲܝܵܡܵܐ‏ : that he could fight with the one who fasts by means of the fast
See the entire entry for ṣayyām, ṣayyāmā n.m. one who fasts