ब्रह्मबृंहैव हि जगज्जगच्च ब्रह्मबृंहणम् ।विद्यते नानयोर्भेदश्चिद्घनब्रह्मणोरिव
In plain words
The world is nothing but the swelling forth of Brahman, and that swelling forth of Brahman is the world; there is no difference between the two, any more than between Brahman and the dense mass of cit.