that the Messenger of Allah ﷺ said: "There are six courtesies due from a Muslim to another Muslim: To give Salam to him when he meets him, to accept his invitation when he invites him, to reply to him when he sneezes, to visit him when he is ill, to follow his funeral when he dies, and to love for him what he loves for himself."
قَالَ رَسُولُ اللَّهِ ﷺ لِلْمُسْلِمِ عَلَى الْمُسْلِمِ سِتٌّ بِالْمَعْرُوفِ يُسَلِّمُ عَلَيْهِ إِذَا لَقِيَهُ وَيُجِيبُهُ إِذَا دَعَاهُ وَيُشَمِّتُهُ إِذَا عَطَسَ وَيَعُودُهُ إِذَا مَرِضَ وَيَتْبَعُ جَنَازَتَهُ إِذَا مَاتَ وَيُحِبُّ لَهُ مَا يُحِبُّ لِنَفْسِهِ وَفِي الْبَابِ عَنْ أَبِي هُرَيْرَةَ وَأَبِي أَيُّوبَ وَالْبَرَاءِ وَأَبِي مَسْعُودٍ