"I heard the Messenger of Allah say: 'Whoever builds a mosque in which the Name of Allah is mentioned, Allah will build a house for him in Paradise.'" (Using translation from Ibn Mājah 735)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ «مَنْ بَنَى مَسْجِدًا لِيُذْكَرَ اللهُ فِيهِ بَنَى اللهُ لَهُ بَيْتًا فِي الْجَنَّةِ»