瑜伽師地論略纂 7.32

7.32

'Revealing the single supreme kind, capable of serving as the cause and condition for dwelling in nirvāṇa': this explains that one [training] can lead to nirvāṇa, sequentially having the meaning of cause and condition, because the meaning of cause and condition applies to the above two lines. The single undefiled wisdom is the supreme among the three, and is also the ultimate fruit produced by the two causes and conditions; hence it is called 'supreme'.