Recognizing himself to be full of desire and energy, the worshipful Brahma, the creator of the living entities, evolved from his own invisible form, from his navel, the hosts of Sadhyas and Pitas

Expressions researched:
"Recognizing himself to be full of desire and energy, the worshipful Brahma, the creator of the living entities, evolved from his own invisible form, from his navel, the hosts of Sadhyas and Pitas"

Srimad-Bhagavatam

SB Canto 3

Recognizing himself to be full of desire and energy, the worshipful Brahma, the creator of the living entities, evolved from his own invisible form, from his navel, the hosts of Sadhyas and Pitas.

SB 3.20.42, Translation and Purport

Recognizing himself to be full of desire and energy, the worshipful Brahma, the creator of the living entities, evolved from his own invisible form, from his navel, the hosts of Sadhyas and Pitas.

The Sādhyas and Pitās are invisible forms of departed souls, and they are also created by Brahmā.