Where does the story of King Qi not killing cattle and sheep come from?

The Affair of Qi Huan and Jin Wen" is from "Mencius: King Hui of Liang".

Translation]: King Xuan of Qi asked (Mencius) and said:"Can I listen to the affairs of Duke Qi Huan and Duke Wen of Jin (hegemony)? "

Mencius said:"Among Confucius's students, there was no one who praised the Duke of Qi Huan and the Duke of Wen of Jin, so it was lost in later generations. I haven't heard of it. If you have to say it, then let's talk about doing the king's way! "

King Qi Xuan) said:"What kind of morality must be necessary to follow the royal road to unify the world? "

Mencius said:"appease the common people and call him king, and no one will be able to resist him. "

King Qi Xuan) said:"Can people like me appease the common people? "

Mencius said:"OK. "

King Qi Xuan) said:"On what basis do you know I can do it? "

Mencius said:"I heard Hu Yi say:'You are sitting in the main hall and a man is walking past him.

You see this person and ask:"Cattle (lead) to **? "And he said:

Prepare to use it for the bell sacrifice. "You say, my king"Let it go!

I couldn't bear to look at its trembling face of fear, and it went to the place of punishment without sin. "(The man asked)"So, the ritual of abandoning the sacrificial bell?

You say:"How can it be wasted? Trade sheep for it.

I wonder if there is such a thing? "

King Qi Xuan) said:"There is such a thing. "

Mencius said:"Such a heart is enough to do the royal way to unify the world. The common people thought that the king was stingy. I do know that you are acting out of an unbearable sense of compassion. "

King Qi Xuan) said:"Yes, it is true that it is the people who misunderstand me. Although the land of Qi is small, how can I spare a cow? But he couldn't bear to see it trembling with fear, and went to the place of death without sin, so he exchanged it for sheep. "

Mencius said:"Don't be surprised to the people that you are stingy. How do they know what it means? If you can't bear to see it die without sin, then what's the difference between a cow and a sheep? "

King Qi Xuan said with a smile"What kind of idea is this? I was not (indeed) stingy with my money and exchanged sheep for cattle, and the people rightly said I was stingy. "

Mencius said:"It doesn't matter, you're doing this in the way of charity, [because you] see the cow and not the sheep. Moral people for birds and animals:

When they saw it alive, they could not bear to see it die. When they hear its voice, they cannot bear to eat its flesh. So the gentleman built the kitchen far away. " ..

Mencius, King Hui of Liang

The king said: Give it up! I can't bear to let him die without sin.

Said to him: Then Fei provoked Zhong and?

Said: Why can it be abolished? Sheep for sheep".

During the Warring States Period, King Qi Xuan saw someone leading a cow to walk in front of the hall, so he asked to lead the cow to **. The morning glory said, "It will be killed and used as a sacrifice to the bell." King Qi Xuan said, "I can't bear to see the cow tremble when it is killed, so let's replace the cow with a sheep." ”