AGnEx 10.4 :ܫܡܝܐ ܕܝܢ ܥ̈ܠܝܐ ܐܢܗܘ ܕܠܪܩܝܥܐ ܕܡܝܢ݂܂ ܡܕܝܢ ܚܫܘܟܐ ܥܒܝܐ܂ ܐܝܬ ܒܝܬ ܫܡܝܐ ܠܫܡܝܐ‏ : if the upper heaven is like the firmament, then there is a thick darkness between the heavens
See the entire entry for māḏēn conj./adv. therefore