Legend has it that the Japanese monk, by the name of Myocho Shuho ( 1282-1337), or better known by his honorific name, Daito Kokushi, after he had an initial glimpse into the mystical nature of Mind (not the ordinary 'mind') was told by his teacher that he needed to deepen his awakening who then spent some twenty years as a beggar.
Worth pausing here, we should never forget that there is a difference between bodhicittotpada which is the direct, initial glimpse into Mind whereby one becomes an authentic Bodhisattva and complete enlightenment or samyaksambodhi. The latter comes after the Bodhisattva has made his long Odyssean-like way to the Bodhimanda, or “bodi-essence” which is connected with the Bodhi-tree.
“The Bodhisattva, appearing like the great Brahma, advances to Bodhimanda to assume the perfect and completes Enlightenment of a Buddha, to overcome the army of Mara” (Lalitavistra Sutra).
In Daito’s case, after his initial glimpse of Mind, it seems that he took his teacher’s advice seriously and was bent on developing his Buddha-nature, that is, to become a Buddha or at least, an advanced Bodhisattva. We learn the details of this from Kenneth Kraft’s book, Eloquent Zen.
"Myocho went to the capital, Kyoto, and joined the crowd of beggars living along the banks of the Kamo River, near the Gojo Bridge. Barefoot and unshaven, wearing only a tattered robe and a cloak of rough straw, he endured the cold and hunger of twenty winters as his insight deepened. Rumors about an uncommon mendicant began to circulate, even within the walls of the imperial compound. One day the Emperor himself went down to the riverbank to investigate. When he challenged the assembled beggars with a paradoxical command, one of them boldly rephrased the paradox and tossed it back to the Emperor. Myocho’s identity was thereby revealed. The Emperor became the monk's patron and personal disciple, and together they proceeded to build a great Zen temple."
In the same book, with more of a spiritual aura to it, the author citing from Issho Miura and Ruth F. Sasaki, Zen Dust, p. 233:
"Eventually, so the story has it, Emperor Hanazono heard of him, and wished to invite him to preach at his palace. Having also heard that this unusual beggar was fond of a certain melon known as makuwa-uri, the Emperor went to the Gojo Bridge in disguise carrying a large basket of the fruit. There he handed the melons to the beggars one by one, carefully scanning each face as he did so. Noticing one with unusually brilliant eyes, the Emperor said, as he offered the melon, “Take this without using your hands.” The immediate response was, “Give it to me without using your hands.”
We can surmise from the above that Daito was both maturing and exploring the relationship between Mind and its phenomena—most particularly, the carnal body (i.e., the skandhas) which is the dependent of Mara who is the adversary the Bodhisattva confronts under the Bodhi-tree.
The process of maturation that Daito went through is in Japanese referred to as shôtaichôyô, meaning “maturing of the ancient germ of insight”. This particular subject is implicit in the path of the Bodhisattva which commences with bodhicittotpada and is crowned later with Buddha enlightenment. We find this idea expressed in Prajna-paramita literature and in the Lotus Sutra known as the the parable of the prodigal son—this parable being a fictitious story that illustrates the maturation of the Bodhisattva from bodhicittaotapada (i.e., the inception of knowing the Mind) to Buddhhood. Briefly, the parable is about a lost son of a rich man who lives in abject poverty until, one day, his father searching for him, recognizes him and sets about by skillful means to inform him who he really is, viz., the true heir to his great fortune. The skillful means the father uses is a gradual course of familiarization which starts with his son being hired to work as a menial who cleans out the heaps of feces and urine on his father’s property. These various tasks eventually culminate, after some twenty years, with the son’s rightful inheritance who no longer fears the power and wealth of his father.
This parable should remind us that the story of the Buddha’s own enlightenment is the direct culmination of his spiritual tenure with pure Mind as a Bodhisattva. Buddhahood, therefore, is the perfection of the vehicle of the Bodhisattva in which the Bodhisattva eventually defeats death as personified by Mara the Evil One. Worth adding, what this Bodhisattvic tenure with Mind should at least accomplish is the recognition of Mind, itself, as the alpha and omega of Buddhism. Daito seems to have the right bearing in this regard. Illustrating this, again I draw from Kraft’s book these two writings from Daito:
“This mind, perfectly and fully realized, moves with a clear, tranquil spiritual awareness. It encompasses heaven, covers the earth, penetrates form, and rides upon sound. It is a boundless openness; it is a summit rising with forbidding abruptness.... It is a radiant light shining from the crown of your head, illuminating wherever you are; it is an awesome wind, rising up at each step you take, enveloping all things.... If you are able to make this mind your own, then even though you do not seek excellence yourself, excellence comes to you of its own accord. Without seeking emancipation, you are not hindered by a single thing.”
“Before the beginningless beginning, prior to the appearance of the first Buddha, already its bright and radiant light shone forth. It illuminates heaven and stands as a perfect mirror on earth, embracing and manifesting all things. The sun, moon, stars, and planets, lightning flashes, thunderclaps—everything without exception receives its benevolent influence.”
If anything, I am struck by the fact that Daito is conscious of the animative power of Mind which, to use a term from the Christian Gospel of John, is the phos zoe, that is, the light of life. To have become sufficiently cognizant of it must have been the result of a long time spent with purification: of distinguishing Daito, the carnal being consisting of the Five Aggregates (skandhas), from the illumined, bodiless Daito of no birth and no death.