BG 14.9

सत्त्वं सुखे संजयति रजः कर्मणि भारत ।
ज्ञानमावृत्य तु तमः प्रमादे संजयत्युत ॥९॥

sattvaṁ sukhe sañjayati
rajaḥ karmaṇi bhārata
jñānam āvṛtya tu tamaḥ
pramāde sañjayaty uta

sattvam - the mode of goodness; sukhe - in happiness; sañjayati - binds; rajaḥ - the mode of passion; karmaṇi - in fruitive activity; bhārata - O son of Bharata; jñānam - knowledge; āvṛtya - covering; tu - but; tamaḥ - the mode of ignorance; pramāde - in madness; sañjayati - binds; uta - it is said.

Text

O son of Bharata, the mode of goodness conditions one to happiness; passion conditions one to fruitive action; and ignorance, covering one’s knowledge, binds one to madness.

Purport

A person in the mode of goodness is satisﬁed by his work or intellectual pursuit, just as a philosopher, scientist or educator may be engaged in a particular ﬁeld of knowledge and may be satisﬁed in that way. A man in the mode of passion may be engaged in fruitive activity; he owns as much as he can and spends for good causes. Sometimes he tries to open hospitals, give to charity institutions, etc. These are signs of one in the mode of passion. And the mode of ignorance covers knowledge. In the mode of ignorance, whatever one does is good neither for him nor for anyone.

Bhagavad Gita As It Is.

Chapter 14: The Three Modes Of Material Nature. Text 9

O son of Bharata, the mode of goodness conditions one to happiness; passion conditions one to fruitive action; and ignorance, covering one’s knowledge, binds one to madness.