JSmem 5:167 :ܗܐ ܡܗܝ݂ܪܘܬܗ ܕܗ݀ܘ ܥ݁ܒܘܕܐ ܕܟܡܐ ܢ݂ܨܚܬ݁‏ : how successful was the skill of that maker!
See the entire entry for mhīrū, mhīrūṯā n.f. skill