سنن أبي داود

Narrated Umar ibn al-Khattab:

I got excited, so I kissed while I was fasting, I then said: Messenger of Allah, I have done a big deed; I kissed while I was fasting. He said: What do you think if you rinse your mouth with water while you are fasting. The narrator Isa ibn Hammad said in his version: I said to him: There is no harm in it. Then both of them agreed on the version: He said: Then what?