"The Messenger of Allah ﷺ led us in prayer one day, then he turned to face us and said: 'I am now your imam, so do not hasten to bow or prostrate or stand or leave before I do. I can see you in front of me and behind me.' Then he said: 'By the One in Whose Hand is my soul, if you had seen what I have seen, you would laugh little and weep much.' We said: 'What have you seen, O Messenger of Allah ﷺ?' He said: 'Paradise and Hell.'" (Using translation from Nasāʾī 1363)
صَلَّى رَسُولُ اللهِ ﷺ صَلَاةً فَأَقْبَلَعَلَيْنَا بِوَجْهِهِ فَقَالَ إِنِّي إِمَامُكُمْ فَلَا تَسْبِقُونِي بِالرُّكُوعِ وَلَا بِالسُّجُودِ وَلَا بِالْقِيَامِ فَإِنِّي أَرَاكُمْ مِنْ بَيْنِ يَدَيَّ وَمِنْ خَلْفِي قَالَ ثُمَّ قَالَ وَالَّذِي نَفْسِي بِيَدِهِ لَوْ رَأَيْتُمْ مَا رَأَيْتُ لَضَحِكْتُمْ قَلِيلًا وَلَبَكَيْتُمْ كَثِيرًا قَالُوا يَا رَسُولَ اللهِ وَمَا رَأَيْتَ؟ قَالَ رَأَيْتُ الْجَنَّةَ وَالنَّارَ