Abu Hurayra reported that the Prophet ﷺ said, "Laugh little. Much laughter kills the heart."

قَالَ النَّبِيُّ ﷺ أَقِلَّ الضَّحِكَ فَإِنَّ كَثْرَةَ الضَّحِكِ تُمِيتُ الْقَلْبَ

Abu Hurayra reported that the Prophet ﷺ said, "Do not laugh a lot. Much laughter kills the heart."

عَنِ النَّبِيِّ ﷺ قَالَ لاَ تُكْثِرُوا الضَّحِكَ فَإِنَّ كَثْرَةَ الضَّحِكِ تُمِيتُ الْقَلْبَ

Abu Hurayra said, "The Prophet ﷺ went out to a group of his Companions who were laughing and talking. He said, 'By the One in whose hand my soul is, if you knew what I knew, you would laugh little and weep much.' Then he left and the people were weeping. Then Allah Almighty revealed to him, 'Muhammad! Why did you make My slaves despair?' The Prophet ﷺ said, "Give good news, guide people and draw near to one another.'"

عَنْ أَبِي هُرَيْرَةَ قَالَ خَرَجَ النَّبِيُّ ﷺ عَلَى رَهْطٍ مِنْ أَصْحَابِهِ يَضْحَكُونَ وَيَتَحَدَّثُونَ فَقَالَ وَالَّذِي نَفْسِي بِيَدِهِ لَوْ تَعْلَمُونَ مَا أَعْلَمُ لَضَحِكْتُمْ قَلِيلاً وَلَبَكَيْتُمْ كَثِيرًا ثُمَّ انْصَرَفَ وَأَبْكَى الْقَوْمَ وَأَوْحَى اللَّهُ عَزَّ وَجَلَّ إِلَيْهِ يَا مُحَمَّدُ لِمَ تُقَنِّطُ عِبَادِي؟ فَرَجَعَ النَّبِيُّ ﷺ فَقَالَ أَبْشِرُوا وَسَدِّدُوا وَقَارِبُوا