||And the king saw there two Brahmana sages named Yaja and Upayaja, both of rigid vows and souls under complete control and belonging to the most superior order.
||Ascertaining the superior accomplishments of the younger of the two the king courted in private Upayaja of rigid vows, by the offer of every desirable acquisition.
||Employed in paying homage to the feet of Upayaja, always addressing in sweet words and offering him every object of human desire, Drupada, after worshipping that Brahmana, addressed him one day, saying, O Upayaja, O Brahmana, if thou, performest those sacrificial rites by virtue of which I may obtain a son who may slay Drona, I promise thee ten thousand kine, or whatever else may be agreeable to thee, O first of Brahmanas, truly am I ready to make gifts to thee'
||Then, after the expiration of a year, Upayaja, that first of Brahmanas, O monarch, addressing Drupada in sweet tone, said, My elder brother Yaja, one day, while wandering through the deep woods, took up a fruit that had fallen upon a spot the purity of which he cared not to enquire about.
||Hearing these words of Upayaja, king Drupada, though entertaining a low opinion of Yaja, nevertheless went to his abode.
||And knowing the affair to be a very grave one, he asked the assistance of Upayaja who coveted nothing.
||Then the great ascetic Upayaja spoke unto king Drupada of everything required for the grand sacrifice by aid of fire from which the king was to obtain offspring.
||Aided by the ascetic power of Yaja and Upayaja, Drupada obtained from the sacrificial fire a son named Dhrishtadyumna and a daughter, viz, the faultless Krishna, both risen from the sacrificial platform.
|Reference:- Mahabharata of Krishna Dwaipayana Vyasa, translated to English by Kisari Mohan Ganguli; Source of Plain Text: www.sacred-texts.com; Wikified at AncientVoice.