大乘義章 8.56

8.56

次就四輪以辨對治。何者四輪？如《成實》說：一住善處，謂生中國。二依善人，謂值佛世。三自發正願，謂具正見。四宿植善根，謂於現在諸根完具。此四唯在天人中有，故論名為天人四輪。所言輪者，就喻名也。能摧八難，出生聖道無漏法輪，故名為輪。四輪如是。治相云何？如論中說：初住善處，能摧五難，謂三惡趣、長壽、欝單，以在人天生住中國，故離斯五。依善人者，遠離佛前佛後難也，以值佛世故離斯難。自發正願，遠離世智辨聰難也，以正求故離彼邪難。宿植善者，遠離盲聾瘖瘂難也，具諸根故遠離彼難。八難如是。

Next, distinguishing their antidotes according to the four wheels. What are the four wheels? As the Tattvasiddhi says: 1. Dwelling in a good place, meaning to be born in a central country (madhyadeśa). 2. Relying on a good person, meaning to encounter the era of a Buddha. 3. Personally generating correct aspirations, meaning to be endowed with right view. 4. Having planted wholesome roots in the past, meaning to have all faculties complete in the present. These four exist only among gods and humans, so the treatise calls them the four wheels of gods and humans. As for 'wheels', it is named by metaphor: because they can crush the eight difficulties and give rise to the untainted Dharma-wheel of the noble path, they are called wheels. Such are the four wheels. What are the characteristics of their antidotes? As explained in the treatise: First, dwelling in a good place can crush five difficulties, namely the three bad destinies, long life, and Uttarakuru, because being born and dwelling in a central country among humans or gods, one is free from these five. Relying on a good person keeps one far removed from the difficulty of before or after a Buddha, because encountering the era of a Buddha removes this difficulty. Personally generating correct aspirations keeps one far removed from the difficulty of worldly knowledge and dialectical eloquence, because by seeking correctly one is free from that false difficulty. Having planted wholesome roots in the past keeps one far removed from the difficulty of blindness, deafness, muteness, and lameness, because possessing all faculties removes that difficulty. Such are the eight difficulties.