Hua yen Sutra ~ 1st century BC
Oh sons of Buddha! If a man pulverizes millions and billions of Buddhas’ universes (each consisting of a thousand million solar systems) and reduces them to dust-motes, each of which represents another universe, and he again pulverizes these universes and holds the total amount of dust-motes acquired thereby in his left hand and walks eastward; and after passing over the same vast number of universes, he then drops one dust-mote and continues walking eastward, and each time he passes over the same number of universes, he drops another dust-mote until he exhausts all that he held in his hand; if he then walks south, west, and north in the four directions and upward and downward, dropping dust-motes as before, Oh, what do you think? The total space in the ten directions of all these universes touched or untouched by his dust-motes, is this space of a Buddha-land not vast, broad, and beyond comprehension?
Unfathomable are the countless worlds In the totality of universes. Many worlds are new or are decaying, While many others soon will cease to be. Like leaves in a forest, Some flourish others fall . . . As different seeds give birth to different fruits, Or magicians project conjurations with their spells, So sentient beings by the power of [collective] karma Make various world-systems that are incomprehensible As a painter draws many pictures, A sentient beings’s Mind can also create Infinite variations of world-systems.