Śukadeva Gosvāmī continued: King Aṁśumān, like his grandfather, performed austerities for a very long time. Nonetheless, he could not bring the Ganges to this material world, and thereafter, in due course of time, he died.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
श्रीशुक उवाच । अंशुमांश्च तपस्तेपे गङ्गानयनकाम्यया । कालं महान्तं नाशक्नोत्ततः कालेन संस्थितः
śrīśuka uvāca | aṃśumāṃśca tapastepe gaṅgānayanakāmyayā | kālaṃ mahāntaṃ nāśaknottataḥ kālena saṃsthitaḥ
SB 9.9.1