es the shape of the ocean floor as a simile for the course of the practice, the sudden drop-off stands for penetration to gnosis. If there were no abrupt sudden drop-off, there would be no abrupt penetration to awakening. However, there are many cases of sudden penetration in the Canon, prime examples being Ven. Bṅhiyaâs attainment of arahantship in Ud 1:10, and Ven. ṅnandaâs attainment in Cv 11:1.6. 2. Anupṅdisesṅya nibbṅna-dhṅtuya: the unbinding of an arahant who has passed away. The image is of a fire that has gone so thoroughly out that its embers no longer glow. See Iti 44, AN 6:43, and Thag 15:2. 3. These are the seven sets forming the Wings to Awakening. See also: Ud 5:5 - --> - - - -