द्वे एवात्मनि विद्येते कर्तृताकर्तृतानघ ।ययैव पश्यसि श्रेयस्तामाश्रित्य स्थिरो भव
In plain words
Only two things exist in the ātman, sinless one: agency and non-agency. Whichever of the two you see as the better, take refuge in that, and become steadfast.