4.
Knowledge of Arising and Passing Away: The Ten Corruptions of Insight [27]
When the meditator, in the exercise of noticing, is able to keep exclusively to the present body-and-mind process, without looking back to past processes or ahead to future ones, then, as a result of insight, (the mental vision of) a brilliant light will appear to him. To one it will appear like the light of a lamp, to others like a flash of lightning, or like the radiance of the moon or the sun, and so on. With one it may last for just one moment, with others it may last longer.
There will also arise in him strong mindfulness pertaining to insight. As a result, all the successive arisings of bodily and mental processes will present themselves to the consciousness engaged in noticing, as if coming to it of themselves; and mindfulness too seems as if alighting on the processes of itself. Therefore the meditator then believes: "There is no body-and-mind process in which mindfulness fails to engage."
His knowledge consisting in insight, here called "noticing," will be likewise keen, strong, and lucid. Consequently, he will discern clearly and in separate forms all the bodily and mental processes noticed, as if cutting to pieces a bamboo sprout with a well-sharpened knife. Therefore the meditator then believes: "There is no body-and-mind process that cannot be noticed." When examining the characteristics of impermanence, etc., or other aspects of reality, he understands everything quite clearly and at once, and he believes it to be the knowledge derived from direct experience.
Further, strong faith pertaining to insight arises in him. Under its influence, the meditator's mind, when engaged in noticing or thinking, is serene and without any disturbance; and when he is engaged in recollecting the virtues of the Buddha, the Dhamma, and the Sangha, his mind quite easily gives itself over to them. There arise in him the wish to proclaim the Buddha's Teaching, joyous confidence in the virtues of those engaged in meditation, the desire to advise dear friends and relatives to practice meditation, grateful remembrance of the help received from his meditation master, his spiritual mentor, etc. These and many other similar mental processes will occur.
There arises also rapture in its five grades, beginning with minor rapture.[28] When purification of mind is gained, that rapture begins to appear by causing "goose-flesh," tremor in the limbs, etc.; and now it produces a sublime feeling of happiness and exhilaration, filling the whole body with an exceedingly sweet and subtle thrill. Under its influence, he feels as if the whole body had risen up and remained in the air without touching the ground, or as if it were seated on an air cushion, or as if it were floating up and down.
There arises tranquillity of mind with the characteristic of quietening the disturbances of consciousness and its mental concomitants; and along with it appear mental agility, etc.[29] When walking, standing, sitting, or reclining there is, under the influence of these mental qualities, no disturbance of consciousness and its mental concomitants, nor heaviness, rigidity, unwieldiness, sickness, or crookedness.[30] Rather, his consciousness and its mental concomitants are tranquil through having reached the supreme relief in non-action.[31] They are agile in always functioning swiftly; they are pliant in being able to attend to any object desired; they are wieldy, in being able to attend to an object for any length of time desired; they are quite lucid through their proficiency, that is, through the ease with which insight penetrates the object; they are also straight through being directed, inclined, and turned only towards wholesome activities.
There also arises a very sublime feeling of happiness suffusing all his body. Under its influence he becomes exceedingly joyous and he believes: "Now I am happy all the time," or "Now, indeed, I have found happiness never felt before," and he wants to tell others of his extraordinary experience. With reference to that rapture and happiness, which are aided by the factors of tranquillity, etc., it was said:
Superhuman is the bliss of a monk
Who, with mind at peace,
Having entered a secluded place,
Wins insight into Dhamma.
When he fully comprehends
The five groups' rise and fall,
He wins to rapture and to joy —
The Deathless this, for those who understand.
— Dhammapada vv. 373-374
There arises in him energy that is neither too lax nor too tense but is vigorous and acts evenly. For formerly his energy was sometimes lax, and so he was overpowered by sloth and torpor; hence he could not notice keenly and continuously the objects as they became evident, and his understanding, too, was not clear. And at other times his energy was too tense, and so he was overpowered by agitation, with the same result of being unable to notice keenly, etc. But now his energy is neither too lax nor too tense, but is vigorous and acts evenly; and so, overcoming these shortcomings of sloth, torpor, and agitation, he is able to notice the objects present keenly and continuously, and his understanding is quite clear, too.
There also arises in him strong equanimity associated with insight, which is neutral towards all formations. Under its influence he regards with neutrality even his examination of the nature of these formations with respect to their being impermanent, etc.; and he is able to notice keenly and continuously the bodily and mental processes arising at the time. Then his activity of noticing is carried on without effort, and proceeds, as it were, of itself. Also in adverting to the objects, there arises in him strong equanimity, by virtue of which his mind enters, as it were, quickly into the objects of advertence.[32]
There arises further a subtle attachment of a calm nature that enjoys the insight graced with the "brilliant light" and the other qualities here described. The meditator, however, is not able to discern it as a corruption but believes it to be just the very bliss of meditation. So meditators speak in praise of it thus: "Only now do I find full delight in meditation!"
Having felt such rapture and happiness accompanied by the "brilliant light" and enjoying the very act of perfect noticing, which is ably functioning with ease and rapidity, the meditator now believes: "Surely I must have attained to the supramundane path and fruition![33] Now I have finished the task of meditation." This is mistaking what is not the path for the path, and it is a corruption of insight which usually takes place in the manner just described. But even if the meditator does not take the "brilliant light" and the other corruptions as an indication of the path and fruition, still he feels delight in them. This is likewise a corruption of insight. Therefore, the knowledge consisting in noticing, even if quick in its functioning, is called "the early stage of (or 'weak') knowledge of arising and passing away," if it is beset and corrupted by those corruptions. For the same reason the meditator is at that time not in a position to discern quite distinctly the arising and passing away of bodily and mental processes.
Mahasi Sayadaw