ŚB 4.8.13

तपसाराध्य पुरुषं तस्यैवानुग्रहेण मे ।
गर्भे त्वं साधयात्मानं यदीच्छसि नृपासनम् ॥ १३ ॥
tapasārādhya puruṣaṁ
tasyaivānugraheṇa me
garbhe tvaṁ sādhayātmānaṁ
yadīcchasi nṛpāsanam

Synonyms

tapasāby austerities; ārādhyahaving satisfied; puruṣamthe Supreme Personality of Godhead; tasyaby His; evaonly; anugraheṇaby the mercy of; memy; garbhein the womb; tvamyou; sādhayaplace; ātmānamyourself; yadiif; icchasiyou desire; nṛpa-āsanamon the throne of the King.

Translation

If you at all desire to rise to the throne of the King, then you have to undergo severe austerities. First of all you must satisfy the Supreme Personality of Godhead, Nārāyaṇa, and then, when you are favored by Him because of such worship, you shall have to take your next birth from my womb.

Purport

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.