Vagrakkhedikâ (Diamond-cutter), section 22

‘What do you think then, O Subhuti, is there anything which has been known by the Tathagata in the form of the highest perfect knowledge?’ The venerable Subhuti said: ‘Not indeed, O Bhagavat, there is nothing, O Bhagavat, that has been known by the Tathagata in the form of the highest perfect knowledge.’ Bhagavat said: ‘So it is, Subhuti, so it is. Even the smallest thing is not known or perceived there, therefore it is called the highest perfect knowledge.’ (22)