There are numerous such examples in Theravada traditions and pali sutras where Buddha mindfulness is taught as a meditation practice and is termed as a practice of tremendous merit and virtue.When a bhikkhu is devoted to this recollection of the Buddha, he is respectful and deferential towards the Master(Buddha).
He attains fullness of faith, mindfulness, understanding and merit.
He has much happiness and gladness. He conquers fear and dread.
He is able to endure pain. He comes to feel as if he were living in the Master’s(Buddha's) presence. And his body, when the recollection of the Buddha’s special qualities dwells in it, becomes as worthy of veneration as a shrine room(Buddha Stupa).
His mind tends toward the plane of the Buddhas. When he encounters an opportunity for transgression, he has awareness of conscience and shame as vivid as though he were face to face with the Master(Buddha).
And if he penetrates no higher, he is at least headed for a happy destiny.
Now, when a man is truly wise, His constant task will surely be This recollection of the Buddha Blessed with such mighty potency.
Thus we should not believe the words of other people when they slander pureland teachings and sutras.
Buddha recollection when practiced and developed makes beings born in purelands of the Buddha.