I've read that one time Ven Anuruddha being a non-returner talked to Sariputta and it went something like this:
"With clairvoyance that is purified and surpasses the human, I survey
the entire world-system. My energy is roused up and unflagging, my
mindfulness is established and lucid, my body is tranquil and
undisturbed, and my mind is immersed in ...