maryādā-laṅghane - by surpassing the customs of etiquette; loka - people; kare upahāsa - joke; iha-loka - this world; para-loka - the next world; dui - two; haya nāśa - become vanquished.

“If one transgresses the laws of etiquette, people make fun of him, and thus he is vanquished in both this world and the next.