DN22 Mahasatipatthana Sutta CSCD374/PTS3.188
So sato'va assasati, sato'va passasati.
he / always mindful / breathes in / always mindful / breathes out
Always mindful, he breathes in and out.
sata (adj.) mindful.
satova = sata + eva: mindful! PTS has "always mindful".
assasati (v.) to breathe, inhale.
passasati (v.) to breathe out.