(हृदयब्रह्मणः सत्यमित्युपासनाविधिब्राह्मणम् ) तद्वै तदेतदेव तदास ।सत्यमेव ।स यो हैतं महद्यक्षं प्रथमजं वेद सत्यं ब्रह्मेति जयतीमांल्लोकान् जित इन्न्वसावसत् य एवमेतन्महद्यक्षं प्रथमजं वेद सत्यं ब्रह्मेति ।सत्यं ह्येव ब्रह्म ॥बृह. ५,४.१ ॥
In plain words
This was that indeed; it was the real alone. He who knows that great, first-born being as the real, as Brahman, conquers these worlds; and his enemy is conquered and cast out, who knows that great, first-born being as the real, as Brahman. For the real indeed is Brahman.