Srimad Bhagavatam Canto 06, Chapter 03, Text 10

SB 6.3.10

tams te veditum icchamo
 yadi no manyase ksamam
narayanety abhihite
 ma bhair ity ayayur drutam
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
As soon as the sinful Ajamila uttered the name Narayana, these four beautiful men immediately arrived and reassured him, saying, “Do not fear. Do not fear.” We wish to know about them from Your Lordship. If you think we are able to understand them, kindly describe who they are.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
The order carriers of Yamaraja, being very much aggrieved because of their defeat by the four Visnudutas, wanted to bring them before Yamaraja and, if possible, punish them. Otherwise they desired to commit suicide. Before pursuing either course, however, they wanted to know about the Visnudutas from Yamaraja, who is also omniscient.

 

Srimad Bhagavatam Canto 06, Chapter 03, Text 09
Srimad Bhagavatam Canto 06, Chapter 03, Text 11