Sunan Ibn Majah 738
سنن ابن ماجه#738Sahihحَدَّثَنَا يُونُسُ بْنُ عَبْدِ الأَعْلَى، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، عَنْ إِبْرَاهِيمَ بْنِ نَشِيطٍ، عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ الرَّحْمَنِ بْنِ أَبِي حُسَيْنٍ النَّوْفَلِيِّ، عَنْ عَطَاءِ بْنِ أَبِي رَبَاحٍ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ قَالَ " مَنْ بَنَى مَسْجِدًا لِلَّهِ كَمَفْحَصِ قَطَاةٍ أَوْ أَصْغَرَ بَنَى اللَّهُ لَهُ بَيْتًا فِي الْجَنَّةِ " .
It was narrated from Jabir bin 'Abdullah that:The Messenger of Allah 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
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 4:4