"Then Subhuti asked Buddha: World-honored One, in the attainment of the Consumation of Incomparable Enlightenment did Buddha make no acquisition whatsoever?"
"Buddha replied: Just so, Subhuti. Through the Consumation of Incomparable Enlightenment I acquired not even the least thing: wherefore it is called Consumation of Incomparable Enlightenment."
The quote is from the 22nd chapter of the Diamond Sutra, entitled "It Cannot be Said that Anything is Attainable."
(The Diamond Sutra and The Sutra of Hui Neng, page 61, translated by A.F. Price and Wong Mou-Lam, publised by Shambhala Publications Inc. Boston, 1969)