This was said by the Buddha, the Perfected One: that is what I heard.

“Mendicants, there are these three periods. What three? Past, future, and present. These are the three periods.”

The Buddha spoke this matter. On this it is said:

“Sentient beings who perceive the communicable, 
become established in the communicable. 
Not understanding the communicable, 
they fall under the yoke of Death. 

But having fully understood the communicable, 
they don’t conceive a communicator, 
as they’ve touched liberation with their mind, 
the supreme state of peace. 

Accomplished in the communicable, 
peaceful, in love with the state of peace; 
making use after reflection, firm in principle, 
a knowledge master cannot be reckoned.”

This too is a matter that was spoken by the Blessed One: that is what I heard.