I do not know who the original poet but this is of the category Bhajans and one of the original singers of this is Meera – who dates back to the early sixteenth century.

“Saanson ki malaa pe simrun main pee ka naam
Apne man ki main janoon aur pee ke mann ki Ram”

Roughly translated…

“With every breath I breathe, I take the name of my beloved
I know my heart (what it desires), and God knows of the heart of my beloved (what she desires)”