One verse

Srimad Bhagavatam 2.5.23

2.5.23

महतस्तु विकुर्वाणाद्रज:सत्त्वोपबृंहितात् । तम:प्रधानस्त्वभवद् द्रव्यज्ञानक्रियात्मक: ॥ २३ ॥

mahatas tu vikurvanad rajah-sattvopabrmhitat tamah-pradhanas tv abhavad dravya-jnana-kriyatmakah

mahatah
of the mahat-tattva
tu
but
vikurvanat
being transformed
rajah
the material mode of passion
sattva
the mode of goodness
upabrmhitat
because of being increased
tamah
the mode of darkness
pradhanah
being prominent
tu
but
abhavat
took place
dravya
matter
jnana
material knowledge
kriya-atmakah
predominantly material activities.

Material activities are caused by the mahat-tattva’s being agitated. At first there is transformation of the modes of goodness and passion, and later—due to the mode of ignorance—matter, its knowledge, and different activities of material knowledge come into play.