Musnad Ahmad 1156:30

Yahya ibn Sa'id narrated to us, from Talhah ibn Yahya, he said: Abdullah ibn Farrukh narrated to me, that a woman asked Umm Salamah and said: "My husband kisses me while he is fasting and I am fasting, so what is your opinion?" She said: "The Messenger of Allah (peace and blessings of Allah be upon him) used to kiss me while he was fasting and I was fasting."