Anushasana Parva 26.89

The man of purified soul who is desirous of acquiring success should seek the protection of Ganga who is like a cow that gives ambrosia instead of ordinary milk, who is prosperity's self, who is endued with omniscience, who exists for all creatures, who is the source of all sorts of food, who is the mother of all mountains, who is the refuge of all pious persons, who is immeasurable in power and energy and who charms the heart of Brahman himself.