Kasina Sutta: http://www.buddha-vacana.org/sutta/anguttara/10/an10-025.html
These, bhikkhus, are the ten kasiṇas bases. Which ten?
One contemplates the earth kasiṇa, above, below, transversely,
undivided, all-permeating; one contemplates the water kasiṇa,
above, below, transversely, undivided, all-permeating; one
contemplates the fire kasiṇa, above, below, transversely,
undivided, all-permeating; one contemplates the air kasiṇa, above,
below, transversely, undivided, all-permeating; one contemplates
the blue kasiṇa, above, below, transversely, undivided,
all-permeating; one contemplates the yellow kasiṇa, above, below,
transversely, undivided, all-permeating; one contemplates the red
kasiṇa, above, below, transversely, undivided, all-permeating; one
contemplates the white kasiṇa, above, below, transversely,
undivided, all-permeating; one contemplates the space kasiṇa,
above, below, transversely, undivided, all-permeating; one
contemplates the consciousness kasiṇa, above, below, transversely,
undivided, all-permeating. These, bhikkhus, are the ten kasiṇas
bases.