Tongue Sucking During Fasting

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. Aus are among its transmitters.

Mishkat al-Masabih 2005 https://sunnah.com/mishkat:2005

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حَدَّثَنَا مُحَمَّدُ بْنُ عِيسَى، حَدَّثَنَا مُحَمَّدُ بْنُ دِينَارٍ، حَدَّثَنَا سَعْدُ بْنُ أَوْسٍ الْعَبْدِيُّ، عَنْ مِصْدَعٍ أَبِي يَحْيَى، عَنْ عَائِشَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يُقَبِّلُهَا وَهُوَ صَائِمٌ وَيَمُصُّ لِسَانَهَا ‏.‏

Narrated Aisha, Ummul Mu'minin: The Prophet (ﷺ) used to kiss her and suck her tongue when he was fasting.

Daif Sunan Abi Dawud 2386 https://sunnah.com/abudawud:2386