In days of old, Shakuni on behalf of Duryodhana defeated (Yudhishthira) at a game of dice and it was according to a stipulation that Yudhishthira the son of Pandu went to the forest.
दुर्योधनार्थं शकुनि ते निर्जितवान् पुरा। समयेन गतोऽरण्यं पाण्डुपुत्रो युधिष्ठिरः॥