MetTheoSyc 351:a.30 :ܐܝܠܝܢ ܓܝܪ ܕܒܡܕܒܪܐ ܡܬܗܦܟܝܢ܂ ܒܫܘܦܐ ܕܩܝ̈ܣܐ ܡܘܠܕܝܢ ܢܘܪܐ‏ : those who wander the desert produce fire by the friction of sticks of wood
See the entire entry for šūp̄, šawpā n.m. friction