Mundaka Upanishad 3.8
intermediate
सप्त प्राणाः प्रभवन्ति तस्मात्सप्तार्चिषः समिधः सप्त होमाः। सप्त इमे लोका येषु चरन्ति प्राणा गुहाशया निहिताः सप्त सप्त॥
sapta prāṇāḥ prabhavanti tasmātsaptārciṣaḥ samidhaḥ sapta homāḥ | sapta ime lokā yeṣu caranti prāṇā guhāśayā nihitāḥ sapta sapta ||
"From Him come the seven pranas, the seven flames, seven kinds of fuel, seven oblations, and these seven worlds in which the pranas move, hidden in the cave, placed seven by seven."
What This Means:
Seven is the sacred number of manifestation: seven pranas (life-forces), seven flames, fuels, offerings, and worlds - all arranged in sevens, hidden in the heart-cave.
Going Deeper:
The seven pranas are: two eyes, two ears, two nostrils, and mouth. Seven worlds represent levels of existence.
How To Apply This:
Your seven sense openings connect you to seven worlds. The source of all is hidden in your heart.
#seven pranas#seven worlds#heart-cave