BG 17.11
अफलाकाङ्क्षिभिर्यज्ञो विधिदिष्टो य इज्यते ।
यष्टव्यमेवेति मनः समाधाय स सात्त्विकः ॥
यष्टव्यमेवेति मनः समाधाय स सात्त्विकः ॥
aphalākāṅkṣibhir yajño vidhi-diṣṭo ya ijyate
yaṣṭavyam eveti manaḥ samādhāya sa sāttvikaḥ
yaṣṭavyam eveti manaḥ samādhāya sa sāttvikaḥ
Word-for-word meanings
saḥ — that; yajñaḥ — yajña; yaḥ — which; ijyate — is performed; vidhi-diṣṭaḥ — according to scriptural injunctions; aphala-ākāṅkṣibhiḥ — by those without desire for material benefit; samādhāya — having fixed; manaḥ — the mind; iti — thus [i.e., with the understanding]; yaṣṭavyam eva — that yajña must certainly be performed as a duty; sāttvikaḥ — [is] of the nature of sattva.
Translation
That yajña which is performed according to scriptural injunctions by those without desire for material benefit, who have fixed their minds with the understanding that yajña must certainly be performed as a duty, is of the nature of sattva.