佛說佛名經 17.6

17.6

"Bhikṣu! In those various worlds, in some worlds that person deposited a dust mote, and in some worlds he did not deposit a dust mote. In all those worlds, whether a dust mote was deposited or not, from the water boundary below to the summit of existence above—Bhikṣu, suppose there were a second person who took a single dust mote and passed beyond as many worlds as that number of dust motes, taking that number of Buddha lands, asamphyeyas of hundreds of thousands of ten millions of nayutas of worlds, as a single step. Bhikṣu! That person then again passed beyond as many worlds as that number of dust motes in a single step, and walking like this for hundreds of thousands of ten millions of nayutas of asaṃkhyeya kalpas, only then deposited a single dust mote; and in this manner exhausted all the dust motes. Bhikṣu! The dust motes filling so many worlds were then further deposited in the worlds of the ten directions. Bhikṣu! He again passed beyond these worlds and deposited dust motes, all those worlds from the water boundary below to the summit of existence above being filled with dust motes. Bhikṣu! What do you think? Could the number of all those dust motes be known?"