金剛般若波羅蜜經註解 1.86

1.86

When they hear these lines and verses, even for a single thought-moment they produce pure faith." If one considers the cause of true faith, it is because they have planted roots of goodness under many Buddhas that they are able to produce faith upon hearing this Mahāyāna Dharma; even to produce faith for the brief span of a single thought-moment likewise occurs because they have planted roots of goodness under Buddhas.