One verse

Srimad Bhagavatam 1.17.16

1.17.16

राज्ञो हि परमो धर्म: स्वधर्मस्थानुपालनम् । शासतोऽन्यान् यथाशास्त्रमनापद्युत्पथानिह ॥ १६ ॥

rajno hi paramo dharmah sva-dharma-sthanupalanam sasato ’nyan yatha-sastram anapady utpathan iha

rajnah
of the king or the executive head
hi
certainly
paramah
supreme
dharmah
occupational duty
sva-dharma-stha
one who is faithful to his prescribed duty
anupalanam
giving protection always
sasatah
while ruling
anyan
others
yatha
according to
sastram
rulings of scriptures
anapadi
without danger
utpathan
persons going astray
iha
as a matter of fact.

The supreme duty of the ruling king is to give all protection to law-abiding persons and to chastise those who stray from the ordinances of the scriptures in ordinary times, when there is no emergency.