The Messenger of Allah ﷺ used to kiss me while he was fasting and I was fasting.
كان رسول الله ﷺ يقبلني وهو صائم، وأنا صائمة.
Abu Dawud (2384) and Ahmad (25456) narrated it, both from the hadith of Sufyan, from Saad bin Ibrahim, from Talha bin Abdullah, meaning Ibn Uthman Qurashi, from Ayesha, and he related it.Ibn Khuzayma (2004) graded it sahih by another route, from Shuba, from Saad bin Ibrahim, with his chain. Its wording is, the Messenger of Allah ﷺ leaned toward me to kiss me. I said, "I am fasting." He said, "So am I," and he kissed me.Its chain of transmission is sahih.