The Pratyutpanna Sutra (also Pratyutpanna Samadhi Sutra, lit.
"The Samadhi of being in the presence of all the
Buddhas"/Simplified Chinese 佛说般舟三昧经 ) is an early Mahayana Buddhist
scripture, which probably originated around the 1st century BCE in
the Gandhara area of northwestern India.
The Pratyutpanna Sutra was first translated into Chinese by the
Kushan Buddhist monk Lokaksema between 178 and 189 CE, at the Han
capital of Loyang. This translation is, together with the
Prajnaparamita Sutra, one of the earliest historically datable
texts of the Mahayana tradition.
The Pratyutpanna Sutra
contains the first known mentions of the Buddha Amitabha and his
Pure Land, said to be at the origin of Pure Land practice in
China:
"Bodhisattvas hear about the Buddha Amitabha and call him to
mind again and again in this land. Because of this calling to mind,
they see the Buddha Amitabha. Having seen him they ask him what
dharmas it takes to be born in the realm of the Buddha Amitabha.
Then the Buddha Amitabha says to these bodhisattvas: 'If you wish
to come and be born in my realm, you must always call me to mind
again and again, you must always keep this thought in mind without
letting up, and thus you will succeed in coming to be born in my
realm." Pratyutpanna Samadhi Sutra, translated by Jeff Wilson.
Pratyutpanna samadhi
The full practice developed by Zhiyi is 90 days long.[1] Lay
practitioners often take a much shorter time. Any practice that
exceeds one day requires a bystander called a dharma protector (護法)
to look after the practitioner. The exercise includes constant
walking or praying to Amitabha, sometimes accompanying or helped by
the bystander. The practioner should avoid sitting, laying, resting
or sleeping during the period of practice. The bystander would warn
the practitioner if he or she engages in prolonged resting. Very
few Buddhists practice this. Yinkuang (印光) suggested that people
should practice the much easier recitation of name of the Buddha
nianfo instead.[2] But some buddhists have said that they feel
healthier after the practice.
http://en.wikipedia.org/wiki/Pratyutpanna_Sutra
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