四分律行事鈔資持記 3.37

3.37

六中。堤謂橫堤，如田之堤岸。《章服儀》云：條堤之相，事等田疇，如畦貯水而養嘉苗，譬服此衣生功德也；佛令像此，義不徒然。

In the sixth section: 'Borders' (堤) means crosswise borders, like the dikes of a field. The Protocols for Robes states: 'The appearance of strips and borders is functionally identical to agricultural fields, like dyked plots storing water to nourish fine sprouts, metaphorically showing that wearing this robe engenders merit; the Buddha ordering it to resemble this was not without purpose.'