Musnad Abu Ya'la al-Mawsili 150:212

'Abd al-A'la narrated to us, Abu al-Ahwas Salam ibn Sulaym narrated to us, from Ziyad ibn 'Alaqah, from 'Amr ibn Maymun, from 'Aishah, that the Messenger of Allah (may Allah bless him and grant him peace) used to kiss while in the month of fasting.