Srimad Bhagavatam Canto 12, Chapter 09, Text 27

SB 12.9.27

tavac chisor vai svasitena bhargavah
 so ’ntah sariram masako yathavisat
tatrapy ado nyastam acasta krtsnaso
 yatha puramuhyad ativa vismitah
 
Translation: 
 
Just then the child inhaled, drawing Markandeya within His body like a mosquito. There the sage found the entire universe arrayed as it had been before its dissolution. Seeing this, Markandeya was most astonished and perplexed.
Srimad Bhagavatam Canto 12, Chapter 09, Text 26
Srimad Bhagavatam Canto 12, Chapter 09, Text 28-29