The Great Epic of the Bhārata dynasty 3.78.20

3.78.20

iti pārtho mahābāhurdurāpaṃ tapa āsthitaḥ |
na tathā dṛṣṭapūrvo'nyaḥ kaścidugratapā iti || 20 ||

"And after Vrihadaswa had gone away, Yudhishthira of firm vows heard from Brahmanas and ascetics that came to him from various directions and from places of pilgrimage and mountains and forests that Arjuna of high intelligence and capable of drawing the bow with his left hand, was still engaged in the austerest of ascetic penances, living upon air alone. And he heard that the mighty-armed Partha was engaged in such fierce asceticism that none else before him had ever been engaged in such penances. And Dhananjaya, the son of Pritha, engaged in ascetic austerities with regulated vows and fixed mind and observing the vow of perfect silence, was, he heard, like the blazing god of justice himself in his embodied form. And, O king, (Yudhishthira) the son of Pandu hearing that his dear brother Jaya, the son of Kunti, was engaged in such asceticism in the great forest, began to grieve for him. And with a heart burning in grief, the eldest son of Pandu, seeking consolation in that mighty forest held converse with the Brahmanas possessed of various knowledge who were living with him there."