OS JnSin3:8 :ܠܐ ܡܢ ܐܝܡܟܐ ܐܬܬ ܝܕܥ ܐܢܬ ܘܠܐ ܠܐܝܠܟܐ ܐܙܠܐ‏ : you do not know whence it came nor whither it is going
See the entire entry for ˀayləḵā adv. where