SB 9.9.1

śrī-śuka uvāca
aṁśumāṁś ca tapas tepe
 gaṅgānayana-kāmyayā
kālaṁ mahāntaṁ nāśaknot
 tataḥ kālena saṁsthitaḥ
Synonyms: 
śrī-śukaḥ uvāca — Śrī Śukadeva Gosvāmī said; aṁśumān — the king named Aṁśumān; ca — also; tapaḥ tepe — executed austerity; gaṅgā — the Ganges; ānayana-kāmyayā — with a desire to bring the Ganges to this material world to deliver his forefathers; kālam — time; mahāntam — for a long duration; na — not; aśaknot — was successful; tataḥ — thereafter; kālena — in due course of time; saṁsthitaḥ — died.
Translation: 
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.