瑜伽師地論略纂 5.111

5.111

第二喻有六句。　「山」者，高義，出初禪故。　「尖頂」者，至一味。　「勝解」者，高山頂尖唯有一峯，第二定中唯一意門，離諸尋伺外散境故。　「泉」，喻內等淨，流出喜樂諸水故。　山傍流出水，大如車軸，故名水軸。　泉水上湧漫，大如汲索，故名水索。喜滋潤如水軸，樂滋潤如水索，滋相應意如傍出，次五根如上湧出故，故以湧喻及上漫喻。

The second simile has six phrases. "Mountain" has the meaning of loftiness, because it transcends the first dhyāna. "Sharp peak" means reaching uniform taste (ekarasa). "Adhimokṣa" means that a lofty mountain peak has only a single crest; in the second dhyāna there is only a single mental gateway, because it is free of the externally dispersing objects of vitarka and vicāra. "Spring" symbolizes inner tranquil purity, because the various waters of joy and bliss flow out from it. Water flowing out from the side of a mountain as large as a chariot axle is called a "water-axle". Spring water welling up and overflowing as large as a well-rope is called a "water-rope". Joy moistens like a water-axle; bliss moistens like a water-rope. Moistening the associated mind is like issuing from the side; next, moistening the five faculties is like welling up above; hence the similes of welling up and overflowing above are used.