Chapter: To cast a look at the Imam during As-Salat (the prayer)
Anas bin Malik
Narrated Anas bin Malik:The Prophet (ﷺ) led us in prayer and then went up to the pulpit and beckoned with both hands towards the Qibla of the mosque and then said, "When I started leading you in prayer, I saw the display of Paradise and Hell on the wall of the mosque (facing the Qibla). I never saw good and bad as I have seen today." He repeated the last statement thrice.
Reference
Sahih al-Bukhari 749
In-book reference
Book 10, Hadith 143
USC-MSA web (English)
Vol. 1, Book 12, Hadith 716
Arabic Text
حَدَّثَنَا مُحَمَّدُ بْنُ سِنَانٍ، قَالَ حَدَّثَنَا فُلَيْحٌ، قَالَ حَدَّثَنَا هِلاَلُ بْنُ عَلِيٍّ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ صَلَّى لَنَا النَّبِيُّ صلى الله عليه وسلم ثُمَّ رَقَا الْمِنْبَرَ، فَأَشَارَ بِيَدَيْهِ قِبَلَ قِبْلَةِ الْمَسْجِدِ ثُمَّ قَالَ " لَقَدْ رَأَيْتُ الآنَ مُنْذُ صَلَّيْتُ لَكُمُ الصَّلاَةَ الْجَنَّةَ وَالنَّارَ مُمَثَّلَتَيْنِ فِي قِبْلَةِ هَذَا الْجِدَارِ، فَلَمْ أَرَ كَالْيَوْمِ فِي الْخَيْرِ وَالشَّرِّ " ثَلاَثًا.