Mahabharata 12.77.5

अश्वारोहा गजारोहा रथिनोऽथ पदातयःएते वैश्यसमा राजन्ब्राह्मणानां भवन्त्युत

aśvārohā gajārohā rathino'tha padātayaḥete vaiśyasamā rājanbrāhmaṇānāṃ bhavantyuta

Our plain-language meaning of this verse is waiting for scholar review.