॥ ekaślokī ॥
kiṃ jyotistavabhānumānahani me rātrau pradīpādikaṃ
syādevaṃ ravidīpadarśanavidhau kiṃ jyotirākhyāhi me ।
cakṣustasya nimīlanādisamaye kiṃ dhīrdhiyo darśane
kiṃ tatrāhamato bhavānparamakaṃ jyotistadasmi prabho ॥
śrīmacchaṅkarabhagavataḥ kṛtau ekaślokī sampūrṇā ॥
Is it your light that shines in the day as the sun and as the bright lamp in the night? Let it be. Which light shines when i close my eyes? (in mental vision) Which light illumines in my intellectual perception? You are that supreme light that illumines the awareness of `aham' and I am that light. In short `that thou art' or `ahambrahmasmi.'
I am that by the light of which the world is illumined in the day and the night also by the lamp, beause the Brahman is the source of all
light, agni or surya. He is the light through which the indriyas function . When the eyes are closed, there is no perception, the eyes implying perception through all indriyas, then the mind functions with the help of the intellect , which in its turn functions by the light of the atman, which is beyond body, mind and intellect and that am I, the supreme reality, Brahman.