Bhagavad Gita Verse 4, Chapter 14

sarvayonishu kaunteya moortayaha sambhavantiyaahaa |
taasaam brahma mahadyoniraham beejapradaha pitaa || 4 ||
 
Of the many forms that are born from all wombs, O Kaunteya, the great brahman is their womb, I their seed-giving father.
 
sarvayonishu : all wombs
kaunteya : O Kaunteya
moortayaha : forms
sambhavanti : born
yaahaa : many
taasaam : of those
brahma : brahman
mahat : great
yonihi : womb
aham : I am
beejapradaha : seed giving
pitaa : father
 
We may be wondering, how does Ishvara split himself into his two aspects of awareness and matter or Prakriti? Doesn’t it sound far fetched? Something quite similar happens to us every night. When we dream, our minds splits, as it were, into two. One aspect becomes the watcher, and the other aspect projects our dreams. In other words, the mind watches its own show. The Mandukya upanishad provides a detailed comparison of our waking, dreaming and deep sleep states.
 
Shri Krishna says that Ishvara, having divided himself into his two aspects, is both the mother and father of every thing and every living being in the universe. After he deposits the seeds or the jeevas into Prakriti, he creates the state of Hiranyagarbha. This state contains the potential to generate an entire sequence of creation, sustenance and dissolution of several universes. It is comparable to a DVD that contains within it the potential to create an entire two hour movie with several characters and locations.
 
Also, the ultimate womb, the ultimate source of the birth of all beings is the great brahman or Prakriti, which is nothing but the three gunaas. If we have to remove the impact and influence that the three gunaas exert upon us, we need to study what they are, how they impact us, how we fall under their sway, and how does one remain unaffected by them. Shri Krishna, having summarized the relevance of the three gunaas, proceeds to analyze the three gunaas in significant detail from the next shloka.