Srimad Bhagavatam Canto 03, Chapter 20, Text 14

SB 3.20.14

tani caikaikasah srastum
 asamarthani bhautikam
samhatya daiva-yogena
 haimam andam avasrjan
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Separately unable to produce the material universe, they combined with the help of the energy of the Supreme Lord and were able to produce a shining egg.
Srimad Bhagavatam Canto 03, Chapter 20, Text 13
Srimad Bhagavatam Canto 03, Chapter 20, Text 15