Ekashloki of Bhagadvadpada Adi Shankaracharya:
kiM jyotistavabhAnumAnahani me ratrau pradIpAdikaM
syAdevaM ravidIpadarshana vidhau kiM jyotirAkhyAhi me
chakshustasya nimIlanAdisamaye kiM dhIrdhiyo darshane
kiM tatrAhamato bhavanparamakaM jyotistadasmI prabho
Guru: How do you see (What is that light/power which helps you see?)
Sishya: I see with the help of sunlight
Guru: How do you see in the night?
Sishya: I see with the help of a lamp
Guru: Let that be so. How do you see the light? How do you see (your visualizations) even before you open your eyes?
Sishya: It is with my intellect
Guru: What helps you see (know) that intellect?
Sishya: This is me (me as pure consciousness)
Guru: (Indeed) You are that supreme light
Sishya: I realize that I am