Because the sons of Sagara Mahārāja had offended a great personality, the heat of their bodies had increased, and they were burnt to ashes. But simply by being sprinkled with water from the Ganges, all of them became eligible to go to the heavenly planets. What then is to be said of those who use the water of mother Ganges to worship her?
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यज्जलस्पर्शमात्रेण ब्रह्मदण्डहता अपि । सगरात्मजा दिवं जग्मुः केवलं देहभस्मभिः
yajjalasparśamātreṇa brahmadaṇḍahatā api | sagarātmajā divaṃ jagmuḥ kevalaṃ dehabhasmabhiḥ
SB 9.9.12