Significance of Kasina
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Buddhist concept of 'Kasina'
Kasina in Buddhism signifies meditation objects related to the four elements—earth, water, fire, and air—that enhance concentration, aid in achieving jhana states, and foster insight, including the development of the divine eye.
From: Visuddhimagga (the pah of purification)
(1) A meditation device made from clay, used as a focus for concentration during meditation.[1] (2) A term referring to a meditative object, particularly the earth kasina, which serves as a focal point for achieving jhana.[2] (3) Meditation objects that relate to the four elements (earth, water, fire, air) and are used to develop concentration and awareness.[3] (4) A meditation object used to develop concentration and insight, such as light, which aids in attaining the divine eye.[4] (5) Objects of meditation used to cultivate concentration, such as earth, water, fire, and air.[5]