One verse

Srimad Bhagavatam 3.19.4

3.19.4

स तदा लब्धतीर्थोऽपि न बबाधे निरायुधम् । मानयन् स मृधे धर्मं विष्वक्सेनं प्रकोपयन् ॥ ४ ॥

sa tada labdha-tirtho ’pi na babadhe nirayudham manayan sa mrdhe dharmam visvaksenam prakopayan

sah
that Hiranyaksa
tada
then
labdha-tirthah
having gained an excellent opportunity
api
although
na
not
babadhe
attacked
nirayudham
having no weapon
manayan
respecting
sah
Hiranyaksa
mrdhe
in battle
dharmam
the code of combat
visvaksenam
the Supreme Personality of Godhead
prakopayan
making angry.

Even though the demon had an excellent opportunity to strike his unarmed foe without obstruction, he respected the law of single combat, thereby kindling the fury of the Supreme Lord.