Sahih Bukhari 1930

Narrated Abu Bakr bin `Abdur-Rahman: My father and I went to `Aisha and she said, I testify that Allah's Apostle at times used to get up in the morning in a state of Janaba from sexual intercourse, not from a wet dream and then he would fast that..

Then he went to Um Salama and she also narrated a similar thing. ..

Narrated Abu Huraira: The Prophet said, If somebody eats or drinks forgetfully then he should complete his fast, for what he has eaten or drunk, has been given to him by Allah. ..

Narrated Humran: I saw `Uthman performing ablution; he washed his hands thrice, rinsed his mouth and then washed his nose, by putting water in it and then blowing it out, and washed his face thrice, and then washed his right forearm up to the elbow..

Narrated `Aisha: A man came to the Prophet and said that he had been burnt (ruined). The Prophet asked him what was the matter. He replied, I had sexual intercourse with my wife in Ramadan (while I was fasting). Then a basket full of dates was..

Narrated Abu Huraira: While we were sitting with the Prophet a man came and said, O Allah's Apostle! I have been ruined. Allah's Apostle asked what was the matter with him. He replied I had sexual intercourse with my wife while I was fasting...