One verse

Srimad Bhagavatam 6.10.9

6.10.9

एतावानव्ययो धर्म: पुण्यश्लोकैरुपासित: । यो भूतशोकहर्षाभ्यामात्मा शोचति हृष्यति ॥ ९ ॥

etavan avyayo dharmah punya-slokair upasitah yo bhuta-soka-harsabhyam atma socati hrsyati

etavan
this much
avyayah
imperishable
dharmah
religious principle
punya-slokaih
by famous persons who are celebrated as pious
upasitah
recognized
yah
which
bhuta
of the living beings
soka
by the distress
harsabhyam
and by the happiness
atma
the mind
socati
laments
hrsyati
feels happiness.

If one is unhappy to see the distress of other living beings and happy to see their happiness, his religious principles are appreciated as imperishable by exalted persons who are considered pious and benevolent.