Building a mosque for the sake of Allah

عَنْ جَابِرِ بْنِ عَبْدِ اللہِ، أَنَّ رَسُولَ اللهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ قَالَ، مَنْ بَنَى مَسْجِدًا لِلهِ كَمَفْحَصِ قَطَاةٍ أَوْ أَصْغَرَ بَنَى اللهُ لَهُ بَيْتًا فِى الْجَنَّةِ

Hazrat Jabir bin Abdullah^ra narrates that the Holy Prophet^sa said:

“Whoever builds a mosque for the sake of Allah, like a sparrow’s nest for Allah or even smaller, Allah will build for him a house in Paradise.”

(Sunan Ibn Majah, Kitab al-Masajid wal Jamaah, Hadith 738)