三彌勒經疏 1.204

1.204

經曰「爾時告」以下，第二如來酬答分。此中二：初受請。是初也。「舍利弗四大海」以下，第二答請。此中二：初答中聞請、後答見請。初中二：初答國土莊嚴、後答功德神力。初中四：一出體、二出莊嚴、三出都、四出主。是初也。謂釋迦佛世閻浮提地七千由旬，西八千由旬，東九千由旬，北十千由旬。彌勒時除三千由旬水故，增三千由旬地，故成十千由旬。如是四方皆增三千由旬故，是故今此中東西是長，長十千由旬；南北名廣，廣八千由旬。

From the sūtra's words, "At that time he told..." onward is the second [division], the division of the Tathāgata's response. Within this there are two: first, accepting the request. This is the first. From "Śāriputra, the four great oceans..." onward is the second, answering the request. Within this there are two: first, answering the request to hear about it; second, answering the request to see it. Within the first there are two: first, answering about the adornment of the land; second, answering about the virtue and spiritual power. Within the first there are four: 1. presenting its substance; 2. presenting its adornments; 3. presenting its capital city; 4. presenting its ruler. This is the first. That is, in the era of Śākyamuni Buddha, the land of Jambudvīpa was seven thousand yojanas [across]; the west was eight thousand yojanas; the east was nine thousand yojanas; the north was ten thousand yojanas. In Maitreya's time, because three thousand yojanas of water are eliminated, three thousand yojanas of land are added, thus making ten thousand yojanas. Because the four directions are all increased by three thousand yojanas in this way, here east to west is the length, being ten thousand yojanas in length; south to north is called the breadth, being eight thousand yojanas in breadth.