阿彌陀經要解 1.30

1.30

淨土法門三根普攝，絕待圓融不可思議，甚深難信，故特呼大智慧者而與之言，以非第一智慧不能直下無疑故也。從是者，從此娑婆世界也。西方者，橫亙直西，標所示現之處也。過者，超越也。十萬億者，千萬曰億，今又積億至十萬也。佛土者，三千大千世界通為一佛所化，名一佛土。且以此土言之，一須彌山東西南北各一洲，同一日月所照，同一小鐵圍山所遶，名一四天下；千四天下名小千世界；千小千名中千世界，則有百萬須彌四洲日月及小鐵圍；千中千界名為大千世界，則有十萬須彌等，故名三千大千世界。過如此等佛土，共十萬億之西方，是極樂世界也。

The Dharma door of the Pure Land universally gathers those of all three capacities, is absolute, completely interfused, and inconceivable, profound and difficult to believe. Therefore [the Buddha] specifically calls upon the one of great wisdom to speak to him, for none other than the foremost wisdom can immediately accept it without doubt. 'From here' means from this Sahā world realm. 'To the west' means extending directly westward, indicating the location of the manifestation. 'Passing beyond' means transcending. As for 'a hundred thousand koṭis', ten million is called a koṭi (yì); here, koṭis are further accumulated up to a hundred thousand. As for 'Buddha lands', a great trichiliocosm is collectively transformed by one Buddha and is named one Buddha land. Taking this world realm as an example: Mount Sumeru has one continent in each of the four directions—east, west, south, and north—illuminated by the same sun and moon, and surrounded by the same small Iron Ring Mountains; this is called one four-continent world. A thousand four-continent worlds are called a small chiliocosm. A thousand small chiliocosms are called a medium chiliocosm, which then has a million Mount Sumerus, four-continent worlds, suns and moons, and small Iron Ring Mountains. A thousand medium chiliocosms are called a great trichiliocosm, which then has a hundred thousand [nayutas of] Mount Sumerus and so forth; hence it is called a great trichiliocosm. Passing beyond this number of Buddha lands, a total of a hundred thousand koṭis to the west, is the Sukhāvatī world realm.