अङ्गुष्ठमात्रः पुरुषो ज्योतिरिवाधूमकः ।ईशानो भूतभव्यस्य स एवाद्य स उ श्वः ॥एतद्वै तत् ॥ १३ ॥
In plain words
The Person, of the measure of a thumb, is like a flame without smoke, the ruler of what has been and what is to be. He is the very same today, and he, indeed, tomorrow. This, verily, is That.