For the first time in full today, I read Bhikkhu Bodhi's translation of the following sutta.
MN 70 - Kitagiri Sutta
http://www.accesstoinsight.org/tipitaka ... .than.html
This really is an excellent sutta.
It starts off slowly with words from the Buddha to some recalcitrant bhikkhus, but really gets rolling once it starts talking about the sevenfold classification of the Sangha. Not only that, but it's replete with clues and suggestions as to what attributes one needs to possess in order to reach that classification and what remains to be done for that type of person. It finishes with the following injunctions (Thanissaro translation).
Monks, I do not say that the attainment of gnosis is all at once. Rather, the attainment of gnosis is after gradual training, gradual action, gradual practice. And how is there the attainment of gnosis after gradual training, gradual action, gradual practice? There is the case where, when conviction has arisen, one visits [a teacher]. Having visited, one grows close. Having grown close, one lends ear. Having lent ear, one hears the Dhamma. Having heard the Dhamma, one remembers it. Remembering, one penetrates the meaning of the teachings. Penetrating the meaning, one comes to an agreement through pondering the teachings. There being an agreement through pondering the teachings, desire arises. When desire has arisen, one is willing. When one is willing, one contemplates. Having contemplated, one makes an exertion. Having made an exertion, one realizes with the body the ultimate truth and, having penetrated it with discernment, sees it
For a disciple who has conviction in the Teacher's message & lives to penetrate it, what accords with the Dhamma is this: 'The Blessed One is the Teacher, I am a disciple. He is the one who knows, not I.' For a disciple who has conviction in the Teacher's message & lives to penetrate it, the Teacher's message is healing & nourishing. For a disciple who has conviction in the Teacher's message & lives to penetrate it, what accords with the Dhamma is this: 'Gladly would I let the flesh & blood in my body dry up, leaving just the skin, tendons, & bones, but if I have not attained what can be reached through human firmness, human persistence, human striving, there will be no relaxing my persistence.' For a disciple who has conviction in the Teacher's message & lives to penetrate it, one of two fruits can be expected: either gnosis here & now, or — if there be any remnant of clinging-sustenance — non-return.
Excellent advice for wayfarers on the path.