Understand that all these beings have their birth in these two natures. I am the source and the dissolution of this entire universe.

Etad yoni — these two are the womb, the matrix. All bhūta (beings, elements) are born from the combination of aparā and parā prakṛti.

Kṛṣṇa affirms: ahaṃ prabhavaḥ pralayaḥ — “I am the origin (prabhava) and the dissolution (pralaya).” The entire cosmos (kṛtsnasya jagataḥ) emerges from Him and returns to Him. He is both the material source and final destruction.