CHAPTER 14 · VERSE 9
Bhagavad Gita 14.9
सत्त्वं सुखे सञ्जयति रजः कर्मणि भारत। ज्ञानमावृत्य तु तमः प्रमादे सञ्जयत्युत॥
Sattva attaches one to happiness, Rajas attaches one to action, O Bharata, while Tamas, veiling wisdom, binds one to negligence and error.
Summarizes the core binding effect of each mode: Sattva to contentment, Rajas to work, Tamas to lethargy.