Smaller than the smallest atom

Smaller than the smallest atom,
All embracing as the heavens,
Tuka views the world objective -
Name and form as all delusion -
Realising its true nature
Serpent like, he drops his cover,
Far is left the triple range,
Which the soul has just passed o'er
Light the jar of dull clay brightens!
Shining in that light doth Tuka
Live on earth to serve the mankind.