Musnad Ahmad 1153:2027

Ishaq ibn Yusuf narrated to us, he said: Al-Dastawa'i informed us, from Yahya ibn Abi Kathir, from Abu Salamah ibn Abd al-Rahman, from Urwah, from Aisha, she said: The Messenger of Allah, peace and blessings of Allah be upon him, used to kiss me while he was fasting.