Hadith on Hereafter: If you could see, you will cry more and laugh little

Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, led us in prayer on day. The Prophet turned to us and he said, “O people, I am your leader. Do not precede me in bowing, prostration, standing, and turning. I see you in front of me and behind me.” Then the Prophet said, “By him in whose hand is the soul of Muhammad, if you could see what I see then you would laugh less and weep more.” They said, “O Messenger of Allah, what do you see?” The Prophet said, “I see Paradise and Hellfire.”

Source: Ṣaḥīḥ Muslim 426

Grade: Sahih (authentic) according to Muslim

عَنْ أَنَسٍ قَالَ  صَلَّى بِنَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ذَاتَ يَوْمٍ فَلَمَّا قَضَى الصَّلَاةَ أَقْبَلَ عَلَيْنَا بِوَجْهِهِ فَقَالَ أَيُّهَا النَّاسُ إِنِّي إِمَامُكُمْ فَلَا تَسْبِقُونِي بِالرُّكُوعِ وَلَا بِالسُّجُودِ وَلَا بِالْقِيَامِ وَلَا بِالِانْصِرَافِ فَإِنِّي أَرَاكُمْ أَمَامِي وَمِنْ خَلْفِي ثُمَّ قَالَ وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ لَوْ رَأَيْتُمْ مَا رَأَيْتُ لَضَحِكْتُمْ قَلِيلًا وَلَبَكَيْتُمْ كَثِيرًا قَالُوا وَمَا رَأَيْتَ يَا رَسُولَ اللَّهِ قَالَ رَأَيْتُ الْجَنَّةَ وَالنَّارَ

صحيح مسلم كتاب الصلاة باب تحريم سبق الإمام بركوع أو سجود ونحوهما 426