Mbh 1.231.5a

“Vaisampayana continued, ‘Mandapala, having heard these words of the dwellers in heaven, reflected how best he could obtain the largest number of offspring within the shortest period of time. The Rishi, after reflection, understood that of all creatures birds alone were blest with fecundity. Assuming the form of a Sarngaka the Rishi had connection with a female bird of the same species called by the name of Jarita. And he begat upon her four sons who were all reciters of the Vedas. Leaving all those sons of his with their mother in that forest, while they were still within eggs, the ascetic went to (another wife called by the name of) Lapita. And, O Bharata, when the exalted sage went away for the company of Lapita, moved by affection for her offspring, Jarita became very thoughtful. Though forsaken by their father in the forest of Khandava, Jarita, anxious in her affection for them, could not forsake her offspring, those infant Rishis encased in eggs. Moved by parental affection, she brought up these children born of her, herself following the pursuits proper to her own species. Some time after, the Rishi, in wandering over that forest in the company of Lapita, saw Agni coming towards Khandava to burn it down. Then the Brahmana Mandapala, knowing the intention of Agni and remembering also that his children were all young moved by fear, gratified the god, of the burning element, that regent of the universe, endued with great energy. And he did this, desiring to put in a word for his unfledged offspring. Addressing Agni, the Rishi said, ‘Thou art, O Agni, the mouth of all the worlds! Thou art the carrier of the sacrificial butter! O purifier (of all sins), thou movest invisible with the frame of every creature! The learned have spoken of thee as an One, and again as possessed of triple nature. The wise perform their sacrifices before thee, taking thee as consisting of eight (mouths). The great Rishis declare that this universe hath been created by thee.