After reviewing the guidelines for practice, take the following as your object of contemplation:
The Matrix of the Thus-Come One is itself the wondrous, enlightened, luminous understanding, which illuminates he entire Dharma-Realm. Within it, therefore, the one is infinitely many and the infinitely many are one. The great appears within the small, just as the small appears within the great. I sit unmoving in this still place for awakening, and my Dharma-body extends everywhere and encompasses the infinity of space in all ten directions. On the tip of a fine hair, magnificent Buddha-lands appear. Seated within each mote of dust, I turn the great Wheel of the Dharma. Because I have freed myself from the world of perceived objects, I have become one with enlightenment. Therefore the suchness of reality manifests–the inherent nature that is wondrous, luminous, and awake.
Surangama Sutra, p. 155