IVMac17:23 :ܘܒܡܚܡܣܢܢܘܬܗܘܢ ܕܒܐ̈ܘܠܨܢܐ‏ : in their perseverance in hardships
See the entire entry for mḥamsnānū, mḥamsnānūṯā n.f. constancy