Maliks Muwatta Book 18, Hadith Number 16.

Section : Permission for a Fasting Man to Kiss.

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.”