One verse

Srimad Bhagavatam 5.22.3

5.22.3

स एष भगवानादिपुरुष एव साक्षान्नारायणो लोकानां स्वस्तय आत्मानं त्रयीमयं कर्मविशुद्धिनिमित्तं कविभिरपि च वेदेन विजिज्ञास्यमानो द्वादशधा विभज्य षट्‌सु वसन्तादिष्वृतुषु यथोपजोषमृतुगुणान् विदधाति ॥ ३ ॥

sa esa bhagavan adi-purusa eva saksan narayano lokanam svastaya atmanam trayimayam karma-visuddhi-nimittam kavibhir api ca vedena vijijnasyamano dvadasadha vibhajya satsu vasantadisv rtusu yathopa-josam rtu-gunan vidadhati.

sah
that
esah
this
bhagavan
the supremely powerful
adi-purusah
the original person
eva
certainly
saksat
directly
narayanah
the Supreme Personality of Godhead, Narayana
lokanam
of all the planets
svastaye
for the benefit
atmanam
Himself
trayi-mayam
consisting of the three Vedas (Sama, Yajur and Rg)
karma-visuddhi
of purification of fruitive activities
nimittam
the cause
kavibhih
by great saintly persons
api
also
ca
and
vedena
by Vedic knowledge
vijijnasyamanah
being inquired about
dvadasa-dha
in twelve divisions
vibhajya
dividing
satsu
in six
vasanta-adisu
headed by spring
rtusu
seasons
yatha-upajosam
according to the enjoyment of their past activities
rtu-gunan
the qualities of the different seasons
vidadhati
he arranges

The original cause of the cosmic manifestation is the Supreme Personality of Godhead, Narayana. When great saintly persons, fully aware of the Vedic knowledge, offered prayers to the Supreme Person, He descended to this material world in the form of the sun to benefit all the planes and purify fruitive activities. He divided Himself into twelve parts and created seasonal forms, beginning with spring. In this way He created the seasonal qualities, such as heat, cold and so on.