JSBhom 126:131 :ܗܵܪܟܲܐ ܗ̄ܘ ܕܲܪܵܐ ܕܟܽܠܵܗ݀ ܐܲܪܥܵܐ ܠܸܗ ܐܸܬܟܲܫܲܪܘ‏ : here is the contest for the whole world; do it with all your skill!
See the entire entry for kšr vb. to be fitting, proper