One verse

Srimad Bhagavatam 5.8.28

5.8.28

तत्रापि ह वा आत्मनो मृगत्वकारणं भगवदाराधनसमीहानुभावेनानुस्मृत्य भृशमनुतप्यमान आह ॥ २८ ॥

tatrapi ha va atmano mrgatva-karanam bhagavad-aradhana-samihanubhavenanusmrtya bhrsam anutapyamana aha.

tatra api
in that birth
ha va
indeed
atmanah
of himself
mrgatva-karanam
the cause of accepting the body of a deer
bhagavat-aradhana-samiha
of past activities in devotional service
anubhavena
by consequence
anusmrtya
remembering
bhrsam
always
anutapya-manah
repenting
aha
said.

Although in the body of a deer, Bharata Maharaja, due to his rigid devotional service in his past life, could understand the cause of his birth in that body. Considering his past and present life, he constantly repented his activities, speaking in the following way.