द्रष्टानुभूतमप्यर्थं कदाचिद्विस्मरत्यलम् ।कदाचिदप्यदृष्टं तु चेतः पश्यति दृष्टवत्
In plain words
At times the seer utterly forgets even a thing he has experienced; and at other times the mind sees even what was never seen, as though it had been seen.