Srimad Bhagavatam Canto 10, Chapter 04, Text 44

SB 10.4.44

sandisya sadhu-lokasya
 kadane kadana-priyan
kama-rupa-dharan diksu
 danavan grham avisat
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
These demons, the followers of Kamsa, were expert at persecuting others, especially the Vaisnavas, and could assume any form they desired. After giving these demons permission to go everywhere and persecute the saintly persons, Kamsa entered his palace.
Srimad Bhagavatam Canto 10, Chapter 04, Text 43
Srimad Bhagavatam Canto 10, Chapter 04, Text 45