Abu Dawud Book 1, Hadith Number 179.
Chapter : Ablution does not become void by kissing a woman.
Narated By ‘Aisha : The Prophet (may peace be upon him) kissed one of his wives and went out for saying prayer He did not perform ablution. ‘Urwah said: I said to her: Who is she except you! Thereupon she laughed. Abu Dawud said: The same version has been reported through a different chain of narrators.