सत्त्वानुरूपा सर्वस्य श्रद्धा भवति भारत।
श्रद्धामयोऽयं पुरुषो यो यच्छ्रद्धः स एव सः।।17.3।।
17.3 O scion of the Bharata dynasty, the faith of all beings is in accordance with their minds. This person is made up of faith as the dominant factor. He is verily what his faith is.
17.3 Sattva means internal organ (i.e., mind). The faith of everyone is according to his internal organ. The meaning is that with whatever Guna his internal organ is conjoined, ones faith corresponds to that Guna (i.e., Guna as object). The term Sattva covers here body, senses etc., already mentioned. Man consists of faith, viz., is the product of his faith. Of whatever faith he is, viz., with whatever faith a man is possessed, that verily he is; he is a transformation of faith of that nature. The purport is this: If the person is associated with faith in auspicious acts he becomes associated with fruit of these auspicious acts. Conseently, attainment chiefly follows ones faith. Sri Krsna further explains the same subject:
Sattwaanuroopaa sarvasya shraddhaa bhavati bhaarata; Shraddhaamayo’yam purusho yo yacchraddhah sa eva sah.
sattva-anurūpā—conforming to the nature of one’s mind; sarvasya—all; śhraddhā—faith; bhavati—is; bhārata—Arjun, the scion of Bharat; śhraddhāmayaḥ—possessing faith; ayam—that; puruṣhaḥ—human being; yaḥ—who; yat-śhraddhaḥ—whatever the nature of their faith; saḥ—their; eva—verily; saḥ—they