Dear RVR anna,
Stanza 55 and 56 are explaining or rather describing the Nature of The State called Brahman.
I know Brahman cannot be described but here Dattatreya is describing the state of beyond all Dualities..
This brief expalnation says it all....
Brahmanandam, Parama Sukhadam, Kevalam Jnanamurtim, Dwandwateetam, Gagana Sadrisham, Tattwamasyadi Lakshyam, Ekam, Nityam, Vimalam, Achalam, Sarvadhee Sakshibhutam, Bhavateetam, Trigunarahitam (Man is the embodiment of divine bliss, wisdom absolute, beyond the pair of opposites, expansive and pervasive like the sky, the goal indicated by the aphorism (mahavakya) "You are That (thath twam asi)", one without a second, eternal, pure, unchanging, witness of all functions of the intellect, beyond all mental conditions and the three attributes of purity(sathwa), restlessness (rajas) and dullness (thamas).
Taken from Sathya Sai Baba's discourse 15 Dec 2007:Love is God,Live In Love