As stated before, the material universes are manifested by the Lord in the form of Mahā-Viṣṇu. Just as a husband and wife combine to beget offspring, Mahā-Viṣṇu combines with His wife māyā, or material nature. This is confirmed in the Bhagavad-gītā (14.4), where Kṛṣṇa states:
- sarva-yoniṣu kaunteya mūrtayaḥ sambhavanti yāḥ
- tāsāṁ brahma mahad yonir ahaṁ bīja-pradaḥ pitā
"It should be understood that all species of life, O son of Kuntī, are made possible by birth in this material nature, and that I am the seed-giving father." Viṣṇu impregnates māyā, the material nature, simply by glancing at her. This is the spiritual method. Materially we are limited to impregnating by only one particular part of our body, but the Supreme Lord, Kṛṣṇa or Mahā-Viṣṇu, can impregnate by any part. Simply by glancing the Lord can conceive countless living entities in the womb of material nature.