SB 3.26.51

tatas tenānuviddhebhyo
 yuktebhyo ’ṇḍam acetanam
utthitaṁ puruṣo yasmād
 udatiṣṭhad asau virāṭ
Synonyms: 
tataḥ — then; tena — by the Lord; anuviddhebhyaḥ — from these seven principles, roused into activity; yuktebhyaḥ — united; aṇḍam — an egg; acetanam — unintelligent; utthitam — arose; puruṣaḥ — Cosmic Being; yasmāt — from which; udatiṣṭhat — appeared; asau — that; virāṭ — celebrated.
Translation: 
From these seven principles, roused into activity and united by the presence of the Lord, an unintelligent egg arose, from which appeared the celebrated Cosmic Being.
Purport: 

In sex life, the combination of matter from the parents, which involves emulsification and secretion, creates the situation whereby a soul is received within matter, and the combination of matter gradually develops into a complete body. The same principle exists in the universal creation: the ingredients are present, but only when the Lord enters into the material elements is matter actually agitated. That is the cause of creation. We can see this in our ordinary experience. Although we may have clay, water and fire, the elements take the shape of a brick only when we labor to combine them. Without the living energy, there is no possibility that matter can take shape. Similarly, this material world does not develop unless agitated by the Supreme Lord as the virāṭ-puruṣa. Yasmād udatiṣṭhad asau virāṭ: by His agitation, space was created, and the universal form of the Lord also manifested therein.