The Prophet (SAW) said, "The child (born out of wedlock) belongs to the one on whose bed it is born, and stoning to death is for the fornicator." [Agreed upon, regarding Abu Hurairah's Hadith].

"Allah’s Messenger (Allah bless him and give him peace) used to set up a pulpit in the mosque for Hassan ibn Thabit. He would stand upright upon it, paying tribute to Allah’s Messenger (Allah bless him and give him peace)’ or: ‘defending Allah’s Messenger (Allah bless him and give him peace).’ He would say (Allah bless him and give him peace): “Allah (Exalted is He) supports Hassan with the Spirit of Holiness, when he defends or pays tribute to Allah’s Messenger (Allah bless him and give him peace)!'”

"Should I return to my people, for he did not leave any dwelling house of his own and maintenance for me?

She said: The Messenger of Allah (saws) replied: Yes. She said: I came out, and when I was in the apartment or in the mosque, he called for me, or he commanded (someone to call me) and, therefore, I was called.

He said: what did you say? So I repeated my story which I had already mentioned about my husband. Thereupon he said: Stay in your house till the term lapses. She said:

So I passed my waiting period in it (her house) for four months and ten days. When Uthman ibn Affan became caliph, he sent for me and asked me about that; so I informed him, and he followed it and decided cases accordingly.

Yazid ibn Nu'aym ibn Huzzal, on his father's authority said: Ma'iz ibn Malik was an orphan under the protection of my father. He had illegal sexual intercourse with a slave-girl belonging to a clan. My father said to him: Go to the Messenger of Allah (saws) and inform him of what you have done, for he may perhaps ask Allah for your forgiveness. His purpose in that was simply a hope that it might be a way of escape for him.

So he went to him and said: Messenger of Allah! I have committed fornication, so inflict on me the punishment ordained by Allah. He (the Prophet) turned away from him, so he came back and said: Messenger of Allah! I have committed fornication, so inflict on me the punishment ordained by Allah. He (again) turned away from him, so he came back and said: Messenger of Allah! I have committed fornication, so inflict on me the punishment ordained by Allah.

When he uttered it four times, the Messenger of Allah (saws) said: You have said it four times. With whom did you commit it?

He replied: With so and so. He asked: Did you lie down with her? He replied: Yes. He asked: Had your skin been in contact with hers? He replied. Yes. He asked: Did you have intercourse with her? He said: Yes. So he (the Prophet) gave orders that he should be stoned to death. He was then taken out to the Harrah, and while he was being stoned he felt the effect of the stones and could not bear it and fled. But Abdullah ibn Unays encountered him when those who had been stoning him could not catch up with him. He threw the bone of a camel's foreleg at him, which hit him and killed him. They then went to the Prophet (saws) and reported it to him.

He said: Why did you not leave him alone. Perhaps he might have repented and been forgiven by Allah.

“The Prophet (saw) was performing prayer in the house of Umm Salamah, and ‘Abdullah or ‘Umar bin Abu Salamah passed in front of him; he gestured his hand, and he went back. Then Zainab bint Umm Salamah passed in front of him, and he gestured his hand, but she kept going. When the Messenger of Allah (saw) finished his prayer, he said: ‘These (women) are more stubborn.’”

Ibn 'Abbas said, "I think that answering a letter is a duty, just like returning the greeting."

the Prophet said a similar Hadith