Garudapurana 3.23.29

3.23.29

vyarthaṃvyarthaṃ tasya cāhurgataṃ vai aśvādīnāṃ vāhanānāṃ ca viddhi /
aśvādīnāmaparādhaṃ vadasva gaṅgādīnāṃ darśanātpāpanāśaḥ //

their journey is declared entirely useless; know it to be just like that of conveyances such as horses. / Tell me what fault lies in horses and the like; yet from seeing the Gaṅgā and other [sacred waters] sin is destroyed;