Musnad Ahmad 1153:1004

'Affan narrated to us, he said: Abu 'Awanah narrated to us, Sa'd ibn Ibrahim narrated to us, from Talhah, from 'Aishah, she said: The Messenger of Allah (peace and blessings of Allah be upon him) leaned toward me to kiss me, so I said: "I am fasting." He said: "And I am fasting." She said: Then he leaned toward me and kissed me.