One verse

Srimad Bhagavatam 10.63.47

10.63.47

अवध्योऽयं ममाप्येष वैरोचनिसुतोऽसुर: । प्रह्रादाय वरो दत्तो न वध्यो मे तवान्वय: ॥ ४७ ॥

avadhyo ’yaṁ mamāpy eṣa vairocani-suto ’suraḥ prahrādāya varo datto na vadhyo me tavānvayaḥ

avadhyaḥ
not to be killed
ayam
he
mama
by Me
api
indeed
eṣaḥ
this
vairocani-sutaḥ
son of Vairocani (Bali)
asuraḥ
demon
prahrādāya
to Prahlāda
varaḥ
the benediction
dattaḥ
given
na vadhyaḥ
not to be killed
me
by Me
tava
your
anvayaḥ
descendants

I will not kill this demonic son of Vairocani, for I gave Prahlāda Mahārāja the benediction that I would not kill any of his descendants.