tapasārādhya puruṣaṁ
tasyaivānugraheṇa me
garbhe tvaṁ sādhayātmānaṁ
yadīcchasi nṛpāsanam
tapasā - by austerities; ārādhya - having satisfied; puruṣam - the Supreme Personality of Godhead; tasya - by His; eva - only; anugraheṇa - by the mercy of; me - my; garbhe - in the womb; tvam - you; sādhaya - place; ātmānam - yourself; yadi - if; icchasi - you desire; nṛpa-āsanam - on the throne of the King.
Suruci was so envious of Dhruva Mahārāja that she indirectly asked him to change his body. According to her, first of all he had to die, then take his next body in her womb, and only then would it be possible for Dhruva Mahārāja to ascend the throne of his father.