The Great Epic of the Bhārata dynasty 13.4.36

13.4.36

vyatyāsenopayuktaste carurvyaktaṃ bhaviṣyati |
vyatyāsaḥ pādape cāpi suvyaktaṃ te kṛtaḥ śubhe || 36 ||

O sweetly-smiling one of blameless character, if thou hast any respect for my word, let us change the trees respectively designed for us. Every one desires to possess an excellent and stainless being for his own son. The glorious Richika too must have acted from a similar motive in this matter, as will appear in the end. For this reason, O beautiful girl, my heart inclines towards thy charu, and thy tree, and thou too shouldst consider how to secure an excellent brother for thyself.--The mother and the daughter Satyavati having acted in this way, they both, O Yudhishthira, became big with child. And that great Rishi, the excellent descendant of Bhrigu, finding his wife quick with child, was pleased at heart, and addressing her, said,--O excellent lady, thou hast not done well in exchanging the charu as will soon become apparent. It is also clear that thou hast changed the trees. I had placed the entire accumulated energy of Brahma in thy charu and Kshatriya energy in the charu of thy mother. I had so ordered that thou wouldst give birth to a Brahmana whose virtues would be famous throughout the three worlds, and that she (thy mother) would give birth to an excellent Kshatriya. But now, O excellent lady, that thou hast reversed the order (of the charu) so, thy mother will give birth to an excellent Brahmana and thou too, O excellent lady, will give birth to a Kshatriya terrible in action.