It is narrated from Yahya bin Saeed that a pig (swine) came before Jesus (peace be upon him) on the road. He (peace be upon him) said: "Go in peace." The people said: "Do you say this to a pig (swine)? (That is, do you not drive it away? Do you not speak harshly to it, as is the custom of people?)" He (peace be upon him) replied: "I fear that my tongue may become accustomed to speaking ill."