律相感通傳 1.107

1.107

又問余云：「坐具兩重，斯成本制。割截後更接，但是一邊一頭，意者接於四面，通皆周緣，如何？」

He also asked me, saying: "The sitting mat being double-layered forms the original regulation. When pieces are joined after being cut, it is only on one edge and one end. If one intends to join pieces on all four sides, running entirely along the perimeter, how about that?"