In plain words
When Dharmarāja offered the agra-tāmbūla to Śrī Kṛṣṇa, Śiśupāla stood up and began to revile Kṛṣṇa as he pleased. He said Kṛṣṇa was not fit to receive the agra-tāmbūla. “Kṛṣṇa! Is it for stealing the saris of those young women as they bathed that you are worshipped? Is it for revelling the day you splashed with the lovely cowherd girls that you are offered arghya? Enough now; fold up your almanac now. Do not go praising yourself; stop it; shut your mouth!” he said. As Kṛṣṇa was reviled like this in the full assembly, Dharmaja was deeply pained. He fell at Kṛṣṇa's feet and said, “While this wicked man reviles You, You scatter smiles; but as for me, I am filled with grief.” Then Kṛṣṇa: “You simple fellow! Blame and praise, rejection and honour are all for the body, not for the Ātma. Why should we bow to them? We ourselves blame our own body, saying this wretched body falls prey to so many diseases. That being so, when others revile our body, they are only helping us, are they not!” He said.
‘Maunāt kalahaṃ nāsti’: if you keep silent, quarrels do not arise. Revile no one. Harm no one. If they do it, let them; you must not. If you do the very thing they did, how can you be better than they? You say what they did is wrong. If you do them harm in return, does what you did become right? So harm no one. Even to those who have harmed you, offer your salutations. Pray, “May all the worlds be happy,” and wish for the welfare of all. Only when all are happy will happiness come to you. Let us wish for the happiness of all; let us hope for the welfare of all. In this world no one is our enemy. Look on all as friends. Only then will you have given the world an ideal life. It is for this that God created you. You may do whatever work you like. But offer your heart to God.