Srimad Bhagavatam Canto 07, Chapter 01, Text 18

SB 7.1.18

damaghosa-sutah papa
 arabhya kala-bhasanat
sampraty amarsi govinde
 dantavakras ca durmatih
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
From the very beginning of his childhood, when he could not even speak properly, Sisupala, the most sinful son of Damaghosa, began blaspheming the Lord, and he continued to be envious of Sri Krsna until death. Similarly, his brother Dantavakra continued the same habits.
Srimad Bhagavatam Canto 07, Chapter 01, Text 17
Srimad Bhagavatam Canto 07, Chapter 01, Text 19