अहोरात्रमिदं द्वद्ध॑ तयोर्मध्ये हुताशन: । एतद् रूपमुदानस्य परम॑ ब्राह्मणा विदु:,ये दिन और रात द्वन्द्द हैं, इनके मध्यभागमें अग्नि हैं। ब्राह्मगलोग इसीको उदानका उत्कृष्ट रूप मानते हैं
ahorātram idaṃ dvandvaṃ tayor madhye hutāśanaḥ | etad rūpam udānasya paramaṃ brāhmaṇā viduḥ ||
Nārada said: “Day and night form a pair of opposites; between them stands the sacred fire. The Brahmanas know this to be the highest manifestation of udāna—the upward-moving vital force—by which life is sustained and directed.”
नारद उवाच
The verse teaches a symbolic correspondence: the duality of day and night frames human experience, and the ‘fire in the middle’ represents a regulating, elevating principle—identified with udāna, the upward-moving vital force. Ethically, it points to inner steadiness and disciplined uplift amid life’s alternating conditions.
Nārada is instructing by using Vedic imagery. He explains a contemplative mapping of cosmic phenomena (day/night and fire) onto subtle physiology (udāna), presenting how learned Brahmanas interpret this as a supreme form or sign of that vital principle.