He observed there the of Brahmacharya, but for some incrutable purpose of the celestials, this his eldest son, Yudhisthira, was born, begotten by Dharma himself.
ब्रह्मचर्यव्रतस्थस्य तस्य दिव्येन हेतुना। साक्षाद् धर्मादयं पुत्रस्तत्र जातो युधिष्ठिरः॥