Bhagavad Gita 14.16 Chapter 14, Verse 16

कर्मणः सुकृतस्याहुः सात्त्विकं निर्मलं फलम् ।
रजसस्तु फलं दुःखमज्ञानं तमसः फलम् ॥१४.१६॥

karmaṇaḥ sukṛtasyāhuḥ sāttvikaṃ nirmalaṃ phalam
rajasastu phalaṃ duḥkhamajñānaṃ tamasaḥ phalam

Meaning

The fruit of good action is said to be sattvic and pure; the fruit of rajas is pain; the fruit of tamas is ignorance.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 14.16 (Chapter 14, The Three Qualities of Nature (Gunatraya Vibhaga Yoga), Verse 16)