Explanation

'Uthmān ibn' Affān (may Allah be pleased with him) wanted to rebuild the Prophet's Mosque in a better way than its former state. But the people disliked that, as it would involve a change to the earlier condition of the Mosque's structure during the Prophet's lifetime. The Mosque was made of mud bricks, and its ceiling was made of palm branches. 'Uthmān, however, wanted to build it with stones and plaster. So, 'Uthmān (may Allah be pleased with him) informed them that he heard the Prophet (may Allah's peace and blessings be upon him) say: Whoever builds a mosque to win the pleasure of Allah Almighty, not for show-off or reputation, Allah will give him the best reward of the same kind of his deed. The reward is that Allah will build for him the like of it in Paradise.