Anubuddha Sutta: Understood
Translated by Bhikkhu Bodhi
Thus have I heard. On one occasion the Blessed One was dwelling among the Vajjis at Bhaṇḍagāma. There the Blessed One addressed the bhikkhus: “Bhikkhus!”
“Venerable sir!” those bhikkhus replied. The Blessed One said this:  “Bhikkhus, it is because of not understanding and penetrating four things that you and I have roamed and wandered for such a long stretch of time.  What four?
“It is, bhikkhus, because of not understanding and penetrating noble virtuous behavior, noble concentration, noble wisdom, and noble liberation that you and I have roamed and wandered for such a long stretch of time.
“Noble virtuous behavior has been understood and penetrated. Noble concentration has been understood and penetrated. Noble wisdom has been understood and penetrated. Noble liberation has been understood and penetrated. Craving for existence has been cut off; the conduit to existence has been destroyed;  now there is no more renewed existence.”
This is what the Blessed One said. Having said this, the Fortunate One, the Teacher, further said this:
- “Virtuous behavior, concentration, wisdom,
and unsurpassed liberation:
these things the illustrious Gotama
understood by himself.
“Having directly known these things,
the Buddha taught the Dhamma to the bhikkhus.
The Teacher, the end-maker of suffering,
the One with Vision, has attained nibbāna.” 
 What follows is included in the Mahāparinibbāna Sutta, DN 16.4.2–3, II 122–23.
http://suttacentral.net/dn16/en Section 27: The Four Noble Things
http://www.accesstoinsight.org/tipitaka ... .vaji.html
 Dīghamaddhānaṃ sandhāvitaṃ saṃsaritaṃ. The “long stretch” of wandering is saṃsāra, derived from the verb saṃsarati, seen here in the past participle saṃsaritaṃ. Mp glosses dīghamaddhānaṃ with cirakālaṃ (“a long time”) and explains sandhāvitaṃ as “roamed by going from one state of existence to another” (bhavato bhavaṃ gamanavasena sandhāvitaṃ).
 Bhavanetti. Mp: “The rope of existence (bhavarajju) is a name for craving. Just as oxen are bound by a rope around the neck, so this leads beings from one existence to another. Therefore it is called the conduit to existence.”
 Cakkhumā parinibbuto. Mp: “He attained nibbāna by the extinction of defilements. This was the first nibbāna, which occurred for him in the vicinity of the bodhi tree. But afterward, between the twin sal trees (at Kusinārā) he attained nibbāna by the nibbāna element without residue remaining.”