Verse 42

यदभावनमास्थाय यदभावस्य भावनम् ।यद्यथावस्तुदर्शित्वं तदचित्तत्वमुच्यते

In plain words

That resting in non-imagining, that imagining of what is not, that seeing of things exactly as they are — this is what is called acittatva.