I have heard that on one occasion the Blessed One was staying near Rajagaha in the Bamboo Grove, the Squirrels’ Sanctuary. Then the brahman Akkosaka Bharadvaja heard that a brahman of the Bharadvaja clan had gone forth from the home life into homelessness in the presence of the Blessed One. Angered & displeased, he went to the Blessed One and, on arrival, insulted & cursed him with rude, harsh words.

When this was said, the Blessed One said to him: “What do you think, brahman: Do friends & colleagues, relatives & kinsmen come to you as guests?”

“Yes, Master Gotama, sometimes friends & colleagues, relatives & kinsmen come to me as guests.”

“And what do you think: Do you serve them with staple & non-staple foods & delicacies?”

“Yes, sometimes I serve them with staple & non-staple foods & delicacies.”

“And if they don’t accept them, to whom do those foods belong?”

“If they don’t accept them, Master Gotama, those foods are all mine.”

“In the same way, brahman, that with which you have insulted me, who is not insulting; that with which you have taunted me, who is not taunting; that with which you have berated me, who is not berating: that I don’t accept from you. It’s all yours, brahman. It’s all yours.

“Whoever returns insult to one who is insulting, returns taunts to one who is taunting, returns a berating to one who is berating, is said to be eating together, sharing company, with that person. But I am neither eating together nor sharing your company, brahman. It’s all yours. It’s all yours.”

[The Buddha:]

Whence is there anger
for one free from anger,
tamed, living in tune —
one released through right knowing,
calmed & Such.

You make things worse
when you flare up
at someone who’s angry.
Whoever doesn’t flare up
at someone who’s angry
wins a battle hard to win.

You live for the good of both
— your own, the other’s —
when, knowing the other’s provoked,
you mindfully grow calm.
When you work the cure of both
— your own, the other’s —
those who think you a fool
know nothing of Dhamma.

When this was said, the brahman Akkosaka Bharadvaja said to the Blessed One, “Magnificent, Master Gotama! Magnificent! Just as if he were to place upright what was overturned, to reveal what was hidden, to show the way to one who was lost, or to carry a lamp into the dark so that those with eyes could see forms, in the same way has Master Gotama — through many lines of reasoning — made the Dhamma clear. I go to the Blessed One for refuge, to the Dhamma, & to the community of monks. Let me obtain the going forth in Master Gotama’s presence, let me obtain admission.”

Then the brahman Akkosaka Bharadvaja received the going forth & the admission in the Blessed One’s presence. And not long after his admission — dwelling alone, secluded, heedful, ardent, & resolute — he in no long time reached & remained in the supreme goal of the holy life, for which clansmen rightly go forth from home into homelessness, knowing & realizing it for himself in the here & now. He knew: “Birth is ended, the holy life fulfilled, the task done. There is nothing further for the sake of this world.” And so Ven. Bharadvaja became another one of the arahants.

Samyutta Nikaya – Brahaman Samyutta SN 7.2
(Akkosa Sutta : Insult translated from Pali by Thanissaro Bikkhu°