Hadith 1512
وَعَنْ عَائِشَةَ قَالَتْ: مَا رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ضَاحِكًا حَتَّى أَرَى مِنْهُ لَهَوَاتِهِ إِنَّمَا كَانَ يتبسم فَكَانَ إِذَا رَأَى غَيْمًا أَوْ رِيحًا عُرِفَ فِي وَجهه
A’isha said, ''I never saw God’s Messenger laugh to such an extent that I could see his uvula, he would only smile ; and when he saw clouds or wind his face showed signs [of fear].” (Bukhari and Muslim.)