2.
The Discourse on Great Fruit
824.
"Monks, these four bases for spiritual power, when developed and cultivated, are of great fruit and great benefit.
And how, monks, are the four bases for spiritual power developed, how are they cultivated, so that they are of great fruit and great benefit?
Here, monks, a monk develops the basis for spiritual power that possesses concentration due to desire and volitional activities of striving -
'thus my desire will not be too slack, nor too tense, nor contracted internally, nor distracted externally.'
And he dwells perceiving after and before -
as before so after, as after so before;
as below so above, as above so below;
as by day so by night, as by night so by day.
Thus with an open mind, unobstructed, he develops a mind of luminosity.
"Concentration due to energy, etc. concentration due to mind, etc. he develops the basis for spiritual power that possesses concentration due to investigation and volitional activities of striving - 'thus my investigation will not be too slack, nor too tense, nor contracted internally, nor distracted externally.' And he dwells perceiving after and before - as before so after, as after so before; as below so above, as above so below; as by day so by night, as by night so by day. Thus with an open mind, unobstructed, he develops a mind of luminosity. Thus developed, monks, the four bases for spiritual power, thus cultivated, are of great fruit and great benefit.
"When the four bases for spiritual power have been thus developed, monks, when they have been thus cultivated, a monk experiences the various kinds of supernormal power - having been one, he becomes many, etc. he exercises mastery with his body even as far as the Brahma world, etc.
"When the four bases for spiritual power have been thus developed, monks, when they have been thus cultivated, with the elimination of the mental corruptions, in this very life, having realised by direct knowledge himself, having attained, a monk dwells in the liberation of mind and liberation by wisdom that are without mental corruptions." The second.