Why does yudhistria feel it is a duty to help the brahmin?

Yudhisthira feels it is his duty to help the brahmin because of his belief in dharma, the righteous path of duty and moral conduct. In the Hindu tradition, aiding and supporting brahmins, who were traditionally teachers and priests, is considered a way to uphold dharma and ensure social harmony. Yudhisthira's adherence to dharma guides his actions and decisions, leading him to help those in need, including the brahmin.