IshGen 122:18 :ܬܫܪ̈ܝܬܐ ܕܩ̈ܢܝܢ ܐܚܝܢܘ̈ܬܐ ܥܡ ܚܘܡܐ ܒܡܢܬܐ ܕܝܒܝܫܘܬܐ‏ : the Tishre-months that acquire a shared nature with "heat" through their portion of dryness
See the entire entry for ḥyānāyū, ḥyānāyūṯā n.f. kinship