In Numbers 15:38-40 God commands Israel to put fringes (tsiytsiy in Hebrew) on the corner of their clothes so that they will remember to do the commands of the torah. As the Hebrew mind focuses on the concrete, God uses physical things as reminders and associations for non-physical things. In this case the fringes are reminders of the commands. The word tsiytsiyt is derived from the root tsiyts meaning a blossom. A blossom is a flower that grows on a tree and is the beginning of the fruit. Just as the blossom turns into a fruit, the fringes on the Hebrews garments are also there to bring about fruit in the sense of doing the commands.