M.b.Serapion 45:12 :ܢܚܕܐ ܐܢܫ ܡܟܝܠ ܒܡܠܟܘܬܗ ܐܝܟ ܕܪܝܘܫ܂ ܘܒܓܕܢܘܬܗ ܐܝܟ ܦܠܘܩܪܛܣ‏ : so let a man rejoice in his kingship like Darius, or in his good fortune like Polycrates
See the entire entry for gaddānū, gaddānūṯā n.f. good fortune, thankfulness