CC Ādi 5.103

sei padma-nāle haila caudda-bhuvana
teṅho brahmā hañā sṛṣṭi karila sṛjana
Word for word: 
sei padma-nāle — within the stem of that lotus flower; haila — were; caudda-bhuvana — the fourteen worlds; teṅho — He Himself; brahmā hañā — appearing as Brahmā; sṛṣṭi — the creation; karila sṛjana — created.
Translation: 
Within the stem of that lotus were the fourteen worlds. Thus the Supreme Lord, as Brahmā, created the entire creation.