[Machine] To the Muslim, there are six etiquettes to be observed towards another Muslim: greet them when you meet them, respond to their greeting when they greet you, say "bless you" when they sneeze, attend their funeral when they pass away, give them sincere advice in private, and love for them what you love for yourself. This is narrated by Abu Ja'far al-Farrah and Abu Ishaq al-Sabi'i.
لِلْمُسْلِمِ عَلَى الْمُسْلِمِ سِتٌّ مِنَ الْمَعْرُوفِ يُسَلِّمُ عَلَيْهِ إِذَا لَقِيَهُ وَيُجِيبُهُ إِذَا دَعَاهُ وَيُشَمِّتُهُ إِذَا عَطَسَ وَيَشْهَدُهُ إِذَا تُوُفِّيَ وَيَنْصَحُ لَهُ بِالْغَيْبِ وَيُحِبُّ لَهُ مَا يُحِبُّ لِنَفْسِهِ لَمْ يَرْفَعْهُ أَبُو جَعْفَرٍ الْفَرَّاءُ وَرَفَعَهُ أَبُو إِسْحَاقَ السَّبِيعِيُّ