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 : Book 10, Hadith 143 USC-MSA web (English) : Vol. 1, Book 12, Hadith 716 (deprecated)
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