頤 → 豐
第27卦 頤 (Nourishment) 变 第55卦 豐 (Abundance)
变爻
此变化涉及 3 个变爻（第 3、4、6 爻）。
第三爻
六三 拂頤。貞凶。十年勿用。无攸利。
Six in the third place means: Turning away from nourishment. Perseverance brings misfortune. Do not act thus for ten years. Nothing serves to further.
第四爻
六四 顛頤。吉。虎視眈眈。其欲逐逐。无咎。
Six in the fourth place means: Turning to the summit For provision of nourishment Brings good fortune. Spying about with sharp eyes Like a tiger with insatiable craving. No blame.
第上爻
上九 由頤。厲吉。利涉大川。
Nine at the top means: The source of nourishment. Awareness of danger brings good fortune. It furthers one to cross the great water.
卦象变化
焦氏易林
張鳥關口，舌直距齒。然諾不行，政亂無緒。
A bird snared at its open mouth; tongue pressed flat against the teeth. Promises and oaths go unfulfilled; governance falls to chaos, without order.
— 焦延寿《焦氏易林》，公元前一世纪
注释
山下有雷化為雷電皆至之豐，頤養之口化為豐之盛而失序。張鳥關口——以網張於鳥嘴。舌直距齒——舌僵硬抵住牙齒。然諾不行——承諾無法兌現。政亂無緒——政事紛亂，毫無頭緒。口之物理性封閉正與頤之養相反：當養之口與言之口同時被堵，一切秩序崩潰。從頤至豐，雷電俱至本應照徹萬象，然口被封則雷之判斷無從宣達。豐之「折獄致刑」須以口之正為前提，口啞則豐為虛盛，養為空名。
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