Abu Hurairah Radiyallahu 'anhu narrates that Rasulullah Sallallahu 'alaihi wasallam said: Indeed my example and the example of the preceding prophets is that of a man who built a house, and perfected and beautified it, but left a place for one brick in a corner. Now, people move around the house and marvel at its beauty but also say: Why a brick was not placed in this corner? Rasulullah Sallallahu 'alaihi wasallam said: I am that brick; and I am the seal of the prophets. (Bukhari: 3535)