Mbh 5.195.1

“‘Bhishma said, “Hearing, O bull of Bharata’s race, those words of Sikhandini, afflicted by destiny, that Yaksha said after reflecting in his mind, these words, ‘Indeed, it was ordained to be so, and, O Kaurava, it was ordained for my grief!’ The Yaksha said, ‘O Blessed lady, I will certainly do what thou wishest! Listen, however, to the condition I make. For a certain period I will give thee my manhood. Thou must, however, come back to me in due time. Pledge thyself to do so! Possessed of immense power, I am a ranger of the skies, wandering at my pleasure, and capable of accomplishing whatever I intend. Through my grace, save the city and thy kinsmen wholly! I will bear thy womanhood, O princess! Pledge thy truth to me, I will do what is agreeable to thee!’ Thus addressed, Sikhandini said unto him, ‘O holy one of excellent vows, I will give thee back thy manhood! O wanderer of the night, bear thou my womanhood for a short time! After the ruler of the Dasarnakas who is cased in a golden mail will have departed (from my city) I will once more become a maiden and thou wilt become a man!’”’