Yahya related to me from Malik from Abu'n-Nadr, the mawla of Umar
ibn Ubaydullah that A'isha bint Talha told him that she was once with
A'isha, the wife of the Prophet, may Allah bless him and grant him
peace, and her husband, who was fasting, came and visited her there.
(He was Abdullah ibn Abd ar-Rahman ibn Abi Bakras-Siddiq.) A'isha said
to him, "What's stopping you from coming close to your wife and
kissing her and joking with her?" He said, "Can I kiss her when I am
fasting?" She said, "Yes."
Muwatta Malik Book 18, Hadith 17