P Sirach 21:27 :ܟܕ ܠܐܛ ܣܟܠܐ ܠܡܢ ܕܠܐ ܚܛܐ ܠܗ܃ ܗܘܝܘ ܡܠܝܛ ܠܢܦܫܗ‏ : when a fool curses (G!) one who has not treated him wrongly, he curses (C!) himself
See the entire entry for lwṭ vb. to curse