As I’ve heard it, Akkosaka was pissed off because one of his relatives had joined the Buddha in the homeless life. He marched off to throw angry insults at the Buddha while the latter patiently listened.

When Akkosaka had finished cursing him, the Buddha asked, “tell me, brahman, do friends and family sometimes come for a visit?”

“Yeah, sure. Sometimes I have friends and family over as guests.”

“Do you serve your guests food and snacks?”

“Of course,” said Akkosaka, “sometimes I serve them food and snacks.”

“And if your guests do not accept the food and snacks, to whom do they belong?”

“If my guests don’t accept my food,” answered Akkosaka, “then those foods are all mine.”

“Likewise,” continued the Buddha, “your insults, anger, and abuses are not accepted by me. It all belongs to you. It is all yours. Those who insult back when insulted, return anger for anger, and engage in argument, are sharing a meal together. But I am not partaking of what you offer. It belongs to you. It is all yours. He who repays anger with anger is worse than the first. But he who refrains, wins a difficult battle for the benefit of both.”

SN 7.2