Musnad Abu Ya'la al-Mawsili 150:210

'Abd al-A'la narrated to us, Sufyan ibn 'Uyaynah narrated to us, he said: I said to 'Abd al-Rahman ibn al-Qasim, "Did you hear your father reporting from 'Aishah that the Messenger of Allah (may Allah bless him and grant him peace) used to kiss her while he was fasting?" He said, "Yes."