Itivuttaka Sutta...

If you seek after truth, you should investigate things in such a way
that your consciousness as you investigate is not distracted by what
you find, or diffused and scattered; neither is it fixed and set.

For
the one who is not swayed, there will be a transcending of birth,
death, and time.

Whether you walk or stand or lie down, Stretch your
limbs or draw them in again, Let you do all these things attentively,
Above, across, and back again.

Whatever your place in the world, Let
you be the one who views the movement Of all compounded things with
attention.



- Itivuttaka Sutta