一切經音義 3.38

3.38

浮囊（上音符又音符尤反孔注尚書云泛流曰浮賈注國語輕也說文泛也從水孚聲下諾唐反集訓云有底曰囊無底曰橐橐音託今經浮囊者氣囊也欲渡大海憑此氣囊輕浮之力也）。

浮囊 (floating raft-bladder; the former is pronounced fu, also fu/you fan; Kong's commentary on the Book of Documents says: 'Drifting and flowing is called 浮'; Jia's commentary on Guoyu says: 'Light'; Shuowen jiezi says: 'To float; composed of 水 with 孚 phonetic'; the latter is nuo/tang fan; Jixun says: 'That which has a bottom is called a 囊; that without a bottom is called a 橐'; 橐 is pronounced tuo; the floating bladder in the present sūtra is an inflated air bladder; one wishing to cross the great ocean relies on the lightness and buoyancy of this air bladder).