Ibn 'Umar said, "There was a time when no one was more entitled to a person's money than his Muslim brother. Now people love their dirhams and dinars more than their Muslim brother. I heard the Prophet, may Allah bless him and grant him peace, say, 'How many a neighbour will be brought together with his neighbour on the Day of Rising! He will say, "Lord, this man closed his door to me and refused to show me common kindness!"'"
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مَالِكُ بْنُ إِسْمَاعِيلَ، قَالَ: حَدَّثَنَا عَبْدُ السَّلاَمِ، عَنْ لَيْثٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ قَالَ: لَقَدْ أَتَى عَلَيْنَا زَمَانٌ، أَوْ قَالَ: حِينٌ، وَمَا أَحَدٌ أَحَقُّ بِدِينَارِهِ وَدِرْهَمِهِ مِنْ أَخِيهِ الْمُسْلِمِ، ثُمَّ الْآنَ الدِّينَارُ وَالدِّرْهَمُ أَحَبُّ إِلَى أَحَدِنَا مِنْ أَخِيهِ الْمُسْلِمِ، سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يَقُولُ: كَمْ مِنْ جَارٍ مُتَعَلِّقٌ بِجَارِهِ يَوْمَ الْقِيَامَةِ يَقُولُ: يَا رَبِّ، هَذَا أَغْلَقَ بَابَهُ دُونِي، فَمَنَعَ مَعْرُوفَهُ.
sunnah.com