SB 2.8.9

ajaḥ sṛjati bhūtāni
 bhūtātmā yad-anugrahāt
dadṛśe yena tad-rūpaṁ
 nābhi-padma-samudbhavaḥ
Word for word: 
ajaḥ — one who is born without a material source; sṛjati — creates; bhūtāni — all those materially born; bhūta-ātmā — having a body of matter; yat — whose; anugrahāt — by the mercy of; dadṛśe — could see; yena — by whom; tat-rūpam — His form of body; nābhi — navel; padma — lotus flower; samudbhavaḥ — being born of.
Translation: 
Brahmā, who was not born of a material source but of the lotus flower coming out of the navel abdomen of the Lord, is the creator of all those who are materially born. Of course, by the grace of the Lord, Brahmā was able to see the form of the Lord.
Purport: 

The first living creature, Brahmā, is called ajaḥ because he did not take his birth from the womb of a mother materially born. He was directly born from the bodily expansion of the lotus flower of the Lord. Thus it is not readily understandable whether the body of the Lord and that of Brahmā are of the same quality or different. This must also be clearly understood. One thing is, however, certain: Brahmā was completely dependent on the mercy of the Lord because after his birth he could create living beings by the Lord’s grace only, and he could see the form of the Lord. Whether the form seen by Brahmā is of the same quality as that of Brahmā is a bewildering question, and Mahārāja Parīkṣit wanted to get clear answers from Śrīla Śukadeva Gosvāmī.