一切經音義 20.33

20.33

瑞應（上垂類反顧野王云王者盛德感乎乾坤故天地應之以信蒼頡篇云瑞應也說文云瑞以玉為信也從玉耑聲也耑音端）。

瑞應 ("auspicious response"; [the former] fanqie: 垂 + 類. Gu Yewang says: "When a sovereign's abundant virtue moves Qian and Kun (Heaven and Earth), Heaven and Earth respond to him with a pledge of trust." The Cangjie pian says: "Rui (瑞) means an auspicious response." The Shuowen says: "Rui means using jade as a token of trust; it takes 玉 as semantic and 耑 as phonetic"; 耑 is pronounced 端).