Srimad Bhagavatam Canto 08, Chapter 01, Text 21

SB 8.1.21

rses tu vedasirasas
 tusita nama patny abhut
tasyam jajñe tato devo
 vibhur ity abhivisrutah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Vedasira was a very celebrated rsi. From the womb of his wife, whose name was Tusita, came the avatara named Vibhu.
Srimad Bhagavatam Canto 08, Chapter 01, Text 20
Srimad Bhagavatam Canto 08, Chapter 01, Text 22