Sequence of the Gua
When falling into darkness, one is certain to attach to something. Thus, after Darkness comes attaching to each other and to Brightness.
Commentary on the Symbol
Brightness is doubled, an image of the brightness of the sun. In correspondence with this, a great person continuously radiates brilliant virtue an deeds all over the world.
Brightness. favorable to be steadfast and upright. Prosperous and smooth. Raise a cow: good fortune.
Commentary on the Decision
Brightness. It means being attached.
The sun and moon attach to Heaven. Grains and plants attach to Earth.
Doubled brightness attaches to what is correct. Thus, all under Heaven are transformed.
The yielding attaches to the central and correct places. for this reason, there is prosperity and smoothness. It is like raising a cow; it brings good fortune.