若众生心,
忆佛念佛,
现前当来,
必定见佛。
If sentient beings’ minds
recollect the Buddha [Amitābha],
and are mindful of the Buddha,
now or in the future,
they will definitely see the Buddha.
– 楞严经大势至菩萨念佛圆通章
Śūraṅgama Sūtra’s Section
On Mahāsthāmaprāpta Bodhisattva’s
Perfect Penetration With Mindfulness Of Buddha
Related Article:
A Great Bodhisattva’s Buddha Mindfulness Practice
https://thedailyenlightenment.com/2013/12/a-great-bodhisattvas-buddha-mindfulness-practice