Śvetāśvatara Upaniṣad · 4..17
तदेतद्ब्रह्मापूर्वमपरमनन्तं बाह्यं व्याप्यं नित्यं विभुं सूक्ष्मं सन्मात्रं सद्ब्रह्म
tadetadbrahmāpūrvamaparamanantaṃ bāhyaṃ vyāpyaṃ nityaṃ vibhuṃ sūkṣmaṃ sanmātraṃ sadbrahma
That is this Brahman, without before or after, infinite, external, omnipenetrating, eternal, omnipresent, subtle, essence of being, true Brahman.
Fifth repetition, carrying the liturgy to its peak. In our yoga practice, this almost tireless repetition teaches patience and persistence. Knowledge of Brahman is not an event but a process of continuous revelation. Each repetition is an opportunity to listen again, to let these words penetrate more deeply. The sadbrahma is not a concept to understand but a reality that we are, remembered through receptive listening.