Abdullah al-Khaulani reported that when Uthman b. 'Affan tried to rebuild the mosque of Messenger of Allah ﷺ the people began to talk about this. Uthman b. 'Affan said: You discuss it very much whereas I have heard Messenger of Allah ﷺ as saying: He who builds a mosque-- and the narrator Bukair said: I think he also said: (for) seeking the pleasure of Allah- Allah would build (a similar house for him in Paradise). and in the narration of Harun (the words are):" A house for him in Paradise."

حَدَّثَنِي هَارُونُ بْنُ سَعِيدٍ الأَيْلِيُّ، وَأَحْمَدُ بْنُ عِيسَى، قَالاَ حَدَّثَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي عَمْرٌو، - وَهُوَ ابْنُ الْحَارِثِ - أَنَّ بُكَيْرًا، حَدَّثَهُ أَنَّ عَاصِمَ بْنَ عُمَرَ بْنِ قَتَادَةَ حَدَّثَهُ أَنَّهُ، سَمِعَ عُبَيْدَ اللَّهِ الْخَوْلاَنِيَّ، يَذْكُرُ أَنَّهُ سَمِعَ عُثْمَانَ بْنَ عَفَّانَ، عِنْدَ قَوْلِ النَّاسِ فِيهِ حِينَ بَنَى مَسْجِدَ رَسُولِ اللَّهِ ﷺ إِنَّكُمْ قَدْ أَكْثَرْتُمْ وَإِنِّي سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ " مَنْ بَنَى مَسْجِدًا - قَالَ بُكَيْرٌ حَسِبْتُ أَنَّهُ قَالَ - يَبْتَغِي بِهِ وَجْهَ اللَّهِ بَنَى اللَّهُ لَهُ مِثْلَهُ فِي الْجَنَّةِ " . وَفِي رِوَايَةِ هَارُونَ " بَنَى اللَّهُ لَهُ بَيْتًا فِي الْجَنَّةِ " .