Bhagavad Gita
9.15

ज्ञानयज्ञेन चाप्यन्ये यजन्तो मामुपासते । एकत्वेन पृथक्त्वेन बहुधा विश्वतोमुखम् ॥

jñānayajñena cāpyanye yajanto māmupāsate | ekatvena pṛthaktvena bahudhā viśvatomukham ||

Translation

Others, sacrificing through the knowledge-sacrifice, worship Me as the One, as the many separately, and as the many facing all directions.

Interpretation

Three modes of philosophical worship: (1) ekatvena — as the One, the non-dual Brahman (Advaita Vedanta's approach); (2) prithaktvena — as the many separately, the Divine as distinct from creation (dualistic approaches); (3) bahudha vishvatomukham — as the many facing all directions, the universal form that faces everywhere. All three are genuine approaches to the one Reality. The jnana-yagna (knowledge-sacrifice) is the offering of the ego-mind's separative tendencies on the fire of discriminative wisdom. Each approach, sincerely followed, leads to the same Divine.