Sahih Bukhari
Virtues and Merits of the Prophet (pbuh) and his Companions
Volume: 004 / Book Number: 056 / Hadith Number: 734
Narrated Jabir bin 'Abdullah:
The Prophet 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)!"