Sahih al-Bukhari 3534Book 61, Hadith 43
حَدَّثَنَا مُحَمَّدُ بْنُ سِنَانٍ، حَدَّثَنَا سَلِيمٌ، حَدَّثَنَا سَعِيدُ بْنُ مِينَاءَ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ ـ رضى الله عنهما ـ قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " مَثَلِي وَمَثَلُ الأَنْبِيَاءِ كَرَجُلٍ بَنَى دَارًا فَأَكْمَلَهَا وَأَحْسَنَهَا، إِلاَّ مَوْضِعَ لَبِنَةٍ، فَجَعَلَ النَّاسُ يَدْخُلُونَهَا وَيَتَعَجَّبُونَ، وَيَقُولُونَ لَوْلاَ مَوْضِعُ اللَّبِنَةِ ".
The Prophet (ﷺ) said, "My similitude in comparison with the other prophets is that of a man who has built a house completely and excellently except for a place of one brick. When the people enter the house, they admire its beauty and say: 'But for the place of this brick (how splendid the house will be)!"