AQoh.161 :ܐܝܟ ܕܠܐ ܡܬܠܒ݁ܟܝܢ ܡܝ̈ܐ܃ ܒܨܒܥ̈ܬܐ‏ : just as water cannot be held in the fingers
See the entire entry for lbk vb. to hold, to take