Verse
अफलाकाङ्क्षिभिर्यज्ञो विधिदृष्टो य इज्यते ।यष्टव्यमेवेति मनः समाधाय स सात्त्विकः ॥
aphalākāṅkṣibhiryajño vidhidṛṣṭo ya ijyateyaṣṭavyameveti manaḥ samādhāya sa sāttvikaḥ
The sacrifice which is offered by men without desire for the personal fruit, which is executed according to the right principle, and with a mind concentrated on the idea of the thing to be done as a sacrifice, that is sattwic.
Gītā 17·11