Bhagavad Gita Chapter 14 Verse 9
भगवद् गीता अध्याय 14 श्लोक 9

सत्त्वं सुखे सञ्जयति रजः कर्मणि भारत।
ज्ञानमावृत्य तु तमः प्रमादे सञ्जयत्युत।।14.9।।



English Translation - Swami Sivananda
14.9 Sattva attaches to happiness, Rajas to action, O Arjuna, while Tamas verily shrouding knowledge attaches to heedlessness.


English Translation of Sanskrit Commentary By Sri Shankaracharya's
14.9 O scion of the Bharata dynasty, sattva, sanjayati, attaches one; sukhe, to happiness; rajas (-attaches is understood-) karmani, to action; tu, while; tamas, avrtya, covering up, veiling; jnanam, knowledge, the discrimination produced by sattva; sanjayati, leads pramade, to inadvertence; uta, also. Pramada means non-performance of a duty on hand.
When do the alities produce the effects stated above? That is being answered:


Transliteration Bhagavad Gita 14.9Sattwam sukhe sanjayati rajah karmani bhaarata;
Jnaanamaavritya tu tamah pramaade sanjayatyuta.


Word Meanings Bhagavad Gita 14.9sattvam—mode of goodness; sukhe—to happiness; sañjayati—binds; rajaḥ—mode of passion; karmaṇi—toward actions; bhārata—Arjun, the son of Bharat; jñānam—wisdom; āvṛitya—clouds; tu—but; tamaḥ—mode of ignorance; pramāde—to delusion; sañjayati—binds; uta—indeed