The seventeenth chapter of the Bhagavad Gita is Sraddhatraya Vibhaga Yoga. In this chapter, Krishna describes the three types of faith corresponding to the three modes of the material nature. Lord Krishna further reveals that it is the nature of faith that determines the quality of life and the character of living entities. Those who have faith in passion and ignorance perform actions that yield temporary, material results while those who have faith in goodness perform actions in accordance with scriptural instructions and hence their hearts get further purified.
After (uttering) the word tat, acts of sacrifice and austerity as also the various acts of charity are performed without regard for results by persons aspiring for Liberation.OPEN VERSE
This word sat is used with regard to (something) coming into being and with regard to (someone) becoming good. So also, O son of Prtha, the word sat is used with regard to an auspicious rite.OPEN VERSE
And the steadfastness in sacrifice, austerity and charity is spoken of as sat. And even the action meant for these is, verily, called as sat (good).OPEN VERSE
O son of Prtha, whatever is offered in sacrifice and given in charity, as also whatever austerity is undertaken or whatever is done without, faith, is said to be of on avail. And it is of no conscience after death, nor here.OPEN VERSE