Srimad Bhagavatam Canto 10, Chapter 46, Text 36

SB 10.46.36

ma khidyatam maha-bhagau
 draksyathah krsnam antike
antar hrdi sa bhutanam
 aste jyotir ivaidhasi
 
Translation: 
 
O most fortunate ones, do not lament. You will see Krsna again very soon. He is present in the hearts of all living beings, just as fire lies dormant in wood.
 
Purport: 
 
Uddhava understood that Nanda and Yasoda were very impatient to see Krsna, and thus he reassured them that Sri Krsna would come soon.
Srimad Bhagavatam Canto 10, Chapter 46, Text 35
Srimad Bhagavatam Canto 10, Chapter 46, Text 37