'Aishah (May Allah be pleased with him) reported:
I have never seen Messenger of Allah (ﷺ) laughing so heartily that his uvula could be seen. He used to smile only.[Al-Bukhari and Muslim]. (IT)
App reference (IT): Book 2, Hadith 23 (IT)
Arabic/English book reference (IT): Book 2, Hadith 703 (IT)