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From a mythological perspective, Brahma was created from a lotus emerging from Lord Vishnu's navel.

In addition to other puranas, the Bhagavata Purana, 3.28.25 mentions this :

The yogi should then meditate on His moonlike navel in the center of His abdomen. From His navel, which is the foundation of the entire universe, sprang the lotus stem containing all the different planetary systems. The lotus is the residence of Brahma, the first created being.

More from this :

http://www.harekrsna.com/sun/features/11-09/features1538.htm

:

The deity of Garbhodakasayi Visnu giving birth to Lord Brahma at Thiruvelliyankudi is a configuration typical of murtis and images depicting this pastime: The Lord is found in a reclining pose, often called Perumal or Srinivasa. Markandeya Rishi often appears near the Lord’s head, Bhumi Devi (Laksmi) at his feet, and Brahmadeva on his lotus flower, attached to Visnu's naval by the lotus stem. Garuda is often present as well.

A similar example is found in Padmanabhapuram, near Trivandrum, at the Anantapadmanabha- swamy temple. The presiding deity, Ananta-padma-nabha-swamy, refers to Garbhodakasayi Visnu (swamy) who lies on Sesa (ananta), and from whose navel (nabha) the lotus (padma) emerges upon which Lord Brahma appears. Another notable example is the Ranganatha Temple in Nellore, Andhra Pradesh. The presiding deity there is a 10 foot long Garbhodakasayi Vishnu (Ranganathaswami) reclining on Ananta Sesa. Laksmi Devi is sitting on a lotus flower on his chest. Lord Brahma is sitting on the lotus of creation, rising from the Lord's navel. Sitting at the Lord's feet are Sridevi and Bhudevi. There is also a seated four-handed Laksmi Devi, who is called Ranga-nayaki-devi, the consort of Ranganatha-swami.

Now, don't ask where does that put Vishnu's birth, LoL. If your friend is looking to answer a religious/mythological question from a scientific/rational standpoint, like these questions usually get into, then, he would get nowhere.

From a mythological perspective, Brahma was created from a lotus emerging from Lord Vishnu's navel.

Now, don't ask where does that put Vishnu's birth, LoL. If your friend is looking to answer a religious/mythological question from a scientific/rational standpoint, like these questions usually get into, then, he would get nowhere.

From a mythological perspective, Brahma was created from a lotus emerging from Lord Vishnu's navel.

In addition to other puranas, the Bhagavata Purana, 3.28.25 mentions this :

The yogi should then meditate on His moonlike navel in the center of His abdomen. From His navel, which is the foundation of the entire universe, sprang the lotus stem containing all the different planetary systems. The lotus is the residence of Brahma, the first created being.

More from this :

http://www.harekrsna.com/sun/features/11-09/features1538.htm

:

The deity of Garbhodakasayi Visnu giving birth to Lord Brahma at Thiruvelliyankudi is a configuration typical of murtis and images depicting this pastime: The Lord is found in a reclining pose, often called Perumal or Srinivasa. Markandeya Rishi often appears near the Lord’s head, Bhumi Devi (Laksmi) at his feet, and Brahmadeva on his lotus flower, attached to Visnu's naval by the lotus stem. Garuda is often present as well.

A similar example is found in Padmanabhapuram, near Trivandrum, at the Anantapadmanabha- swamy temple. The presiding deity, Ananta-padma-nabha-swamy, refers to Garbhodakasayi Visnu (swamy) who lies on Sesa (ananta), and from whose navel (nabha) the lotus (padma) emerges upon which Lord Brahma appears. Another notable example is the Ranganatha Temple in Nellore, Andhra Pradesh. The presiding deity there is a 10 foot long Garbhodakasayi Vishnu (Ranganathaswami) reclining on Ananta Sesa. Laksmi Devi is sitting on a lotus flower on his chest. Lord Brahma is sitting on the lotus of creation, rising from the Lord's navel. Sitting at the Lord's feet are Sridevi and Bhudevi. There is also a seated four-handed Laksmi Devi, who is called Ranga-nayaki-devi, the consort of Ranganatha-swami.

Now, don't ask where does that put Vishnu's birth, LoL. If your friend is looking to answer a religious/mythological question from a scientific/rational standpoint, like these questions usually get into, then, he would get nowhere.

1
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From a mythological perspective, Brahma was created from a lotus emerging from Lord Vishnu's navel.

Now, don't ask where does that put Vishnu's birth, LoL. If your friend is looking to answer a religious/mythological question from a scientific/rational standpoint, like these questions usually get into, then, he would get nowhere.