Ps-Clem Recogs 1.4:9 :ܕܐܦܠܐ ܚܕܐ ܡܢܗܝܢ ܡܫܟܚ ܗܘܝܬ ܕܒܪܥܝܢܝ ܐܫܪܪ‏ : for not even one of these was I able to affirm in my mind
See the entire entry for šrr vb. to be firm, true