http://www.cttbusa.org/amitabha/amitabha.htm
“Shariputra, those living beings who hear should vow, ‘I wish to be born in that country.’ And why?
Those who thus attain are all superior and good people, all gathered together in one place.
Shariputra, one cannot have few good roots, blessings, virtues, and causal connections to attain birth in that land.
“Shariputra, if there is a good man or a good woman who hears spoken ‘Amitabha’ and holds the name, whether for one day, two days, three, four, five days, six days, as long as seven days, with one heart unconfused, when this person approaches the end of life, before him will appear Amitabha and all the assembly of Holy Ones.
When the end comes, his heart is without inversion; in Amitabha’s Land of Ultimate Bliss he will attain rebirth.
Shariputra, because I see this benefit, I speak these words: If living beings hear this spoken they should make the vow, ‘I will be born in that land.’
“Shariputra, if there are people who have already made the vow, who now make the vow, or who are about to make the vow, ‘I desire to be born in Amitabha’s Country,’ these people, whether born in the past, now being born, or to be born in the future, all will irreversibly attain to anuttarasamyaksambodhi.
Therefore, Shariputra, all good men and good women, if they are among those who have faith, should make the vow, ‘I will be born in that country.’