Bhagavad Gita 18.23 Chapter 18, Verse 23

नियतं सङ्गरहितमरागद्वेषतः कृतम् ।
अफलप्रेप्सुना कर्म यत्तत्सात्त्विकमुच्यते ॥१८.२३॥

niyataṃ saṅgarahitamarāgadveṣataḥ kṛtam
aphalaprepsunā karma yattatsāttvikamucyate

Meaning

Prescribed action done without attachment, without attraction or aversion, by one who does not seek its fruit, is called sattvic.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 18.23 (Chapter 18, Liberation through Renunciation (Moksha Sannyasa Yoga), Verse 23)