One verse

Srimad Bhagavatam 11.4.5

11.4.5

आदावभूच्छतधृती रजसास्य सर्गे विष्णु: स्थितौ क्रतुपतिर्द्विजधर्मसेतु: । रुद्रोऽप्ययाय तमसा पुरुष: स आद्य इत्युद्भ‍वस्थितिलया: सततं प्रजासु ॥ ५ ॥

ādāv abhūc chata-dhṛtī rajasāsya sarge viṣṇuḥ sthitau kratu-patir dvija-dharma-setuḥ rudro ’pyayāya tamasā puruṣaḥ sa ādya ity udbhava-sthiti-layāḥ satataṁ prajāsu

ādau
in the beginning
abhūt
He became
śata-dhṛtiḥ
Lord Brahmā
rajasā
by the material mode of passion
asya
of this universe
sarge
in the creation
viṣṇuḥ
Lord Viṣṇu
sthitau
in maintenance
kratu-patiḥ
the Lord of sacrifice
dvija
of the twice-born brāhmaṇas
dharma
of the religious duties
setuḥ
the protector
rudraḥ
Lord Śiva
apyayāya
for annihilation
tamasā
by the mode of ignorance
puruṣaḥ
the Supreme Person
saḥ
He
ādyaḥ
original
iti
thus
udbhava-sthiti-layāḥ
creation, maintenance and destruction
satatam
always
prajāsu
among created beings

In the beginning, the original Supreme Personality manifested the form of Brahmā through the material mode of passion in order to create this universe. The Lord manifested His form as Viṣṇu, the Lord of sacrifice and protector of the twice-born brāhmaṇas and their religious duties, to maintain the universe. And when the universe is to be annihilated the same Supreme Lord employs the material mode of ignorance and manifests the form of Rudra. The created living beings are thus always subject to the forces of creation, maintenance and destruction.