vadanti—they say; tat—that; tattva-vidaḥ—learned souls; tattvam—the Absolute Truth; yat—which; jñānam—knowledge; advayam—nondual; brahma—Brahman; iti—thus; paramātmā—Paramātmā; iti—thus; bhagavān—Bhagavān; iti—thus; śabdyate—is known.