And where have those four liberated and very beautiful persons gone who released me from arrest and saved me from being dragged down to the hellish regions?

Expressions researched:
"And where have those four liberated and very beautiful persons gone who released me from arrest and saved me from being dragged down to the hellish regions"

Srimad-Bhagavatam

SB Canto 6

And where have those four liberated and very beautiful persons gone who released me from arrest and saved me from being dragged down to the hellish regions?

SB 6.2.31, Translation and Purport

And where have those four liberated and very beautiful persons gone who released me from arrest and saved me from being dragged down to the hellish regions?

As we have learned from the descriptions in the Fifth Canto, the hellish planets are situated in the lower portions of this universe. Therefore they are called adho bhuvaḥ. Ajāmila could understand that the Yamadūtas had come from that region.