Yudhishthira can abandon the whole world full of wealth, but he will never sacrifice morality. The Pandavas (Yudhisthira) himself has said, "I am won'. Therefore, I am unable to decide this matter.
त्यजेत सर्वां पृथिवीं समृद्धां युधिष्ठिरो धर्ममथो न जह्यात्। उक्तं जितोऽस्मीति च पाण्डवेन तस्मान्न शक्नोमि विवेक्तुमेतत्॥