阿彌陀經疏 1.143

1.143

經曰：「大如車輪」，次釋第二分量也。此經據小小者說，謂如車輪；《觀經》、《清淨覺經》約大者說，或二十里乃至六十萬里，然隨念大小遂無常準。

The sūtra says: "Large as cartwheels." Next, this explains the second: the dimensions. This sūtra speaks based on the smaller ones, calling them 'like cartwheels'; the *Contemplation Sūtra* and the Pure and Clean Enlightenment Sūtra speak with reference to the large ones, [which are] twenty leagues or even up to six hundred thousand leagues. However, their size follows one's thoughts, and thus there is no constant standard.