صَحِيحُ مُسْلِمٍ
Sahih Muslim 533 d
The Book of Zuhd and Softening of Hearts
The Virtue Of Building Masajid
حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، وَمُحَمَّدُ بْنُ الْمُثَنَّى، كِلاَهُمَا عَنِ الضَّحَّاكِ، - قَالَ ابْنُ الْمُثَنَّى حَدَّثَنَا الضَّحَّاكُ بْنُ مَخْلَدٍ، - أَخْبَرَنَا عَبْدُ الْحَمِيدِ بْنُ جَعْفَرٍ، حَدَّثَنِي أَبِي، عَنْ مَحْمُودِ بْنِ لَبِيدٍ، أَنَّ عُثْمَانَ بْنَ عَفَّانَ، أَرَادَ بِنَاءَ الْمَسْجِدِ فَكَرِهَ النَّاسُ ذَلِكَ وَأَحَبُّوا أَنْ يَدَعَهُ عَلَى هَيْئَتِهِ فَقَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ مَنْ بَنَى مَسْجِدًا لِلَّهِ بَنَى اللَّهُ لَهُ فِي الْجَنَّةِ مِثْلَهُ .
Mahmud b. Labid reported that 'Uthman b. 'Affan decided to rebuild the mosque (of Allah's Messenger (ﷺ) in Medina) but the people did not like this idea and they wished that it should be preserved in the same (old) form. Thereupon he (Hadrat 'Uthman) said: I heard Allah's Messenger (ﷺ) as saying: He who builds a mosque for Allah, Allah would build for him (a house) in Paradise like it.
Sahih Muslim, 533 dSahihصحيح