True observation through wisdom, not eyes
Nahj al-Balāgha|Volume 1|Book 3|Chapter 281
٢٨١. وَقَالَ (عليه السلام): لَيْسَتِ الرَّوِيَّةُ كَالْـمُعَايَنَةِ مَعَ الْإِبْصَارِ، فَقَدْ تَكْذِبُ الْعُيُونُ أَهْلَهَا، وَلَا يَغُشُّ الْعَقْلُ مَنِ اسْتَنْصَحَهُ.
281. Amīr al-mu’minīn, peace be upon him, said: Perception by the eyes is not real observation because the eyes sometimes deceive people; but wisdom does not deceive whomsoever it counsels.