One verse

Srimad Bhagavatam 11.4.20

11.4.20

देवासुरे युधि च दैत्यपतीन् सुरार्थे हत्वान्तरेषु भुवनान्यदधात् कलाभि: । भूत्वाथ वामन इमामहरद् बले: क्ष्मां याच्ञाच्छलेन समदाददिते: सुतेभ्य: ॥ २० ॥

devāsure yudhi ca daitya-patīn surārthe hatvāntareṣu bhuvanāny adadhāt kalābhiḥ bhūtvātha vāmana imām aharad baleḥ kṣmāṁ yācñā-cchalena samadād aditeḥ sutebhyaḥ

deva-asure
of the demigods and demons
yudhi
in the battle
ca
and
daitya-patīn
the leaders of the demons
sura-arthe
for the sake of the demigods
hatvā
by killing
antareṣu
during the reign of each Manu
bhuvanāni
all the worlds
adadhāt
protected
kalābhiḥ
by His various appearances
bhūtvā
becoming
atha
moreover
vāmanaḥ
the incarnation as a dwarf brāhmaṇa boy
imām
this
aharat
took away
baleḥ
from Bali Mahārāja
kṣmām
earth
yācñā-chalena
on the excuse of begging for charity
samadāt
gave
aditeḥ
of Aditi
sutebhyaḥ
to the sons (the demigods)

The Supreme Lord regularly takes advantage of the wars between the demons and demigods to kill the leaders of the demons. The Lord thus encourages the demigods by protecting the universe through His various incarnations during the reigns of each Manu. The Lord also appeared as Vāmana and took the earth away from Bali Mahārāja on the plea of begging three steps of land. The Lord then returned the entire world to the sons of Aditi.