17:11
अफलाकाङ्क्षिभिर्यज्ञो विधिदृष्टो य इज्यते ।
यष्टव्यमेवेति मनः समाधाय स सात्त्विकः ॥१७- ११॥
aphalaakaa~NkShibhiryadnyo widhidRRiShTo ya ijyate ।
yaShTawyameweti manaH samaadhaaya sa saattwikaH ॥१७- ११॥
Source: Automatic ITRANS Transliteration
Sacrifice which is performed from a knowledgeable perspective, not desiring fruit,
With the heartfelt conviction that it is but duty, that is sattvic.
Source: Milind S. Pandit
Yajna enjoined by the scriptures, performed with a firm belief that it is a duty, and without the desire for the fruit, is Saattvika Yajna.
Of sacrifices, that sacrifice performed according to duty and to scriptural rules, and with no expectation of reward, is of the nature of goodness.
Source: Bhagavad Gita As It Is