A very important teaching from the Ekashloki of Adi Shankaracharya.
The guru asks: ‘What is your source of light?’
The student replies: ‘My source of light in the day is the sun.’
Guru: ‘What is your source of light in the night? Student: ‘Lamp and the like.’
Guru: ‘Let that be so. Please tell me what is your source of light to see the sun and the lamp?’
Student: ‘The eyes.’
Guru: ‘What is the source of light in times like when your eyes are closed?
Student: ‘It is the intellect.’
Guru: ‘What is your source of light to see the intellect?’
Student: ‘Then, it is me, the pure Consciousness.’
Guru: ‘Therefore, you are that supreme light.’
Student: ‘Sir, I realise that I am that supreme light.’