Verse
सत्त्वानुरूपा सर्वस्य श्रद्धा भवति भारत ।श्रद्धामयोऽयं पुरुषो यो यच्छ्रद्धः स एव सः ॥
The faith of each man takes the shape given to it by his stuff of being, O Bharata. This Purusha, this soul in man, is, as it were, made of shraddha, a faith, a will to be, a belief in itself and existence, and whatever is that will, faith or constituting belief in him, he is that and that is he.
Gītā 17·3