ब्रह्मणः सर्वभूतानि जायन्ते परमात्मनः ।तस्मादेतानि ब्रह्मैव भवन्तीत्यवधारयेत् ॥ ४९ ॥
In plain words
All beings are born from Brahman, from the supreme Self. So settle it firmly: these are nothing but Brahman.
Close to the Sanskrit
From Brahman, from the supreme Self, all beings are born; therefore one should firmly ascertain, "these are Brahman alone."