Syr-RomLaw.15.10 :ܗ݀ܘ ܓܒܪܐ ܕܐܡ݁ܪ ܥܠ ܢܦܫܗ ܕܥܒ݂ܕܐ ܗܘ ܘܒܪ ܥܣܪ̈ܝܢ ܗ݂ܘ ܫܢ̈ܝܢ܃ ܡܚܣܪ ܠܗ݀ ܠܚܐܪܘܬܗ‏ : that man who says of himself that he is a slave and he is twenty years old, deprives himself of his freedom
See the entire entry for ḥsr vb. to be lacking