عَن عَائِشَة: أَن الني صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: كَانَ يُقَبِّلُهَا وَهُوَ صَائِم ويمص لسنانها. رَوَاهُ أَبُو دَاوُد

‘A'isha said that the Prophet used to kiss her and suck her tongue when he was fasting. Abu Dawud transmitted it.**Saum, 34. This is said by some to be weak because Muhammad b. Dinar and Sa'd b. Ausare among its transmitters.