Arabic (Original)
وَبِهَذَا الْإِسْنَادِ عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ قَالَ إِذَا رَأَيْتُمْ الرَّجُلَ يَعْتَادُ الْمَسْجِدَ فَاشْهَدُوا لَهُ بِالْإِيمَانِ فَإِنَّ اللَّهَ قَالَ { إِنَّمَا يَعْمُرُ مَسَاجِدَ اللَّهِ مَنْ آمَنَ بِاللَّهِ وَالْيَوْمِ الْآخِرِ }.
English Translation
And with this same chain, from the Messenger of Allah, peace and blessings be upon him, that he said: "When you see a man frequenting the mosque, then bear witness for him of faith, for Allah has said: 'Only he shall maintain the mosques of Allah who believes in Allah and the Last Day...'"