Bhagavatapurana 4.8.13

4.8.13

tapasārādhya puruṣaṃ tasyaivānugraheṇa me /
garbhe tvaṃ sādhayātmānaṃ yadīcchasi nṛpāsanam //

12. Pity, thou art a child and truly thou dost not know thyself as born of another woman’s womb (and) cherishest a desire for an unattainable thing. 13. Propitiate the Perfect Person, and by means of Tapas and only by His favour bring yourself into my womb (try to be born of me if you desire the king's throne.