Mbh 13.26.6h

The very mother of the heavens, she has sprung from the highest mountain for running over the plains and conferring the most precious benefits on all creatures of the Earth. She is the highest cause of all things; she is perfectly stainless. She is as subtile as Brahma. She affords the best bed for the dying. She leads creatures very quickly to heaven. She bears away a large volume of water. She bestows great fame on all. She is the protectress of the universe.[245] She is identical with every form. She is very much coveted by persons crowned with success. Verily, Ganga is the path to Heaven of those that have bathed in her current.[246] The Brahmanas hold Ganga as equalling the Earth in forgiveness, and in the protection and upholding of those that live by her; further, as equalling Fire and Surya in energy and splendour; and, lastly, as always equalling Guha himself in the matter of showing favours unto the regenerate class.[247] Those men who, in this life, even mentally seek with their whole souls that sacred stream which is praised by the Rishis, which has issued out of the feet of Vishnu, which is very ancient, and which is exceedingly sacred, succeed in repairing to the regions of Brahman. Fully convinced that children and other possessions, as also regions possessed by every kind of felicity, are transitory or liable to destruction, men of subdued souls, who are desirous of attaining to that everlasting station which is identical with Brahma, always pay their adorations to Ganga with that reverence and love which are due from a son to mother.