Hom1 2.1:7 :ܘܚܕܘܬܗ ܕܨܕܝܩܐ ܗܢܘܢ ܫܝܪ̈ܬܐ ܘܫܥ̈ܢܘܢܝܐ ܕܡܚܕܝܢ ܠܒܗ‏ : the righteous person's joys are the songs and hymns that make his heart rejoice
See the entire entry for ḥdy vb. to rejoice