Srimad Bhagavatam Canto-02, Chapter-10, Text-25
gatim jigisatah padau
padbhyam yajñah svayam havyam
karmabhih kriyate nrbhih
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Thereupon, because of His desiring to control movement, His legs became manifested, and from the legs the controlling deity named Visnu was generated. By His personal supervision of this act, all varieties of human being are busily engaged in dutiful occupational sacrifice.
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