觀無量壽佛經義疏 2.58

2.58

「『以佛力故，當得見彼清淨國土，如報明鏡自見面像。』」教由佛說，即是佛力，所謂如來異方便也。三、因修獲證。

"'By the Buddha's power, you will be able to see that pure land, like looking into a bright mirror and seeing the image of one's own face.'" The teaching being expounded by the Buddha is itself the Buddha's power—what is called the Tathāgata's extraordinary expedient. Third, obtaining realization through cultivation.