नियतं सङ्गरहितमरागद्वेषतः कृतम्।
अफलप्रेप्सुना कर्म यत्तत्सात्त्विकमुच्यते।।18.23।।
18.23 The daily obligatory action which is performed without attachment and without likes or dislikes by one who does not hanker for rewards, that is said to be born of sattva.
18.23 Obligatory act is that which is appropriate to ones own station and stage of life. Doing it without attachment means devoid of attachment to agency etc., and without desire or aversion means that it is not done through desire to win fame and aversion to win notoriety, i.e., is performed without ostentation - when obligatory works are performed in the above-mentioned way by one who is not after their fruits, they are said to be Sattvika.
Niyatam sangarahitam araagadweshatah kritam; Aphalaprepsunaa karma yattat saattwikamuchyate.
niyatam—in accordance with scriptures; saṅga-rahitam—free from attachment; arāga-dveṣhataḥ—free from attachment and aversion; kṛitam—done; aphala-prepsunā—without desire for rewards; karma—action; yat—which; tat—that; sāttvikam—in the mode of goodness; uchyate—is called