Messenger of Allah ﷺ said, "If you knew that which I know you would laugh little and weep much."  

أَنَّ أَبَا هُرَيْرَةَ ؓ كَانَ يَقُولُ قَالَ رَسُولُ اللَّهِ ﷺ لَوْ تَعْلَمُونَ مَا أَعْلَمُ لَضَحِكْتُمْ قَلِيلاً وَلَبَكَيْتُمْ كَثِيرًا  

The Prophet ﷺ said, "If you knew that which I know, you would laugh little and weep much."  

قَالَ النَّبِيُّ ﷺ لَوْ تَعْلَمُونَ مَا أَعْلَمُ لَضَحِكْتُمْ قَلِيلاً وَلَبَكَيْتُمْ كَثِيرًا