一切經音義 29.32

29.32

Ponder and deliberate 恖忖 (The character above is si 思; its top derives from xin 囟; 囟 is pronounced xin; the posthumous naming rules state: “Profound schemes and far-reaching thoughts are called si 恖”; the sūtra uses 思, which is the popular character. The lower character has the fanqie cun + sun; the Kaosheng says: “忖 means to consider; deliberating and calculating in the heart is called cun; it is a phono-semantic compound character”).