一切經音義 5.259

5.259

源底（愚素反廣雅萬物之本曰源玉篇云物之本也禮記曰達於禮樂之源鄭注云源本也說文作厡形聲字也從泉或作厵其義一也）。

源底 (fanqie: 愚素反 [yù]. The Guangya says: "The root of the myriad things is called 源 (source)." The Yupian says: "The root of things." The Liji says: "Reaching to the source of rites and music." Zheng's commentary says: "源 means root." The Shuowen writes it as 原, a phono-semantic character; semantic with 泉, sometimes written as 厵; the meaning is identical).