gītā mahātmya - Verse śloka 3
śloka 3
malanirmocanaṃ pūmasaṃ jalasnānaṃ dina pratidina
sakridgītāṃbhasi snānaṃ saṃsāramalāṇāsanam
Translation
Human beings bathe daily to remove the dirt from their bodies. But if you bathe even once in the sacred waters of the Bhagavad Gita, it destroys the mountain of impurity.