[Machine] The Prophet ﷺ used to say that a Muslim is a brother to another Muslim. He should not oppress him or abandon him. He also said, "By the One in Whose Hand is the soul of Muhammad, no two people love one another for the sake of Allah, except that they are separated except by sinning against that right. And he used to say, "It is not permissible for a Muslim to abandon his brother for more than three days. He who does this and then dies will enter Hell."

أَنَّ النَّبِيَّ ﷺ كَانَ يَقُولُ الْمُسْلِمُ أَخُو الْمُسْلِمِ لَا يَظْلِمُهُ وَلَا يَخْذُلُهُ وَيَقُولُ وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ مَا تَوَادَّ اثْنَانِ فَفُرِّقَ بَيْنَهُمَا إِلَّا بِذَنْبٍ يُحْدِثُهُ أَحَدُهُمَا وَكَانَ يَقُولُ لِلْمَرْءِ الْمُسْلِمِ عَلَى أَخِيهِ مِنَ الْمَعْرُوفِ سِتٌّ يُشَمِّتُهُ إِذَا عَطَسَ وَيَعُودُهُ إِذَا مَرِضَ وَيَنْصَحُهُ إِذَا غَابَ وَيَشْهَدُهُ وَيُسَلِّمُ عَلَيْهِ إِذَا لَقِيَهُ وَيُجِيبُهُ إِذَا دَعَاهُ وَيَتْبَعُهُ إِذَامَاتَ وَنَهَى عَنْ هِجْرَةِ الْمُسْلِمِ أَخَاهُ فَوْقَ ثَلَاثٍ