[Machine] The Messenger of Allah ﷺ said, "There are five obligations of a Muslim towards his brother: returning greetings, responding to a sneeze, accepting an invitation when he is invited, visiting the sick, and attending funerals." Abu Abdullah Al-Hafiz informed us, who was informed by Muhammad bin Abdullah bin Quraysh, who was informed by Al-Hasan bin Sufyan, who was informed by Fayyad bin Zuhair, who was informed by Abdul Razzaq, who was informed by Ma'mar, who narrated from Ibn Mas'ood. This hadith is mentioned by Muslim in Sahih, narrated by Abdul Hameed, who was informed by Abdul Razzaq. Ma'mar used to transmit this hadith frequently, and when he was asked about it, he would trace it back. And indeed, Al-Awza'i, Yunus bin Zaid, and Uqail also traced it.
قَالَ رَسُولُ اللهِ ﷺ خَمْسٌ تَجِبُ لِلْمُسْلِمِ عَلَى أَخِيهِ رَدُّ السَّلَامِ وَتَشْمِيتُ الْعَاطِسِ وَإِجَابَةُ الدَّعْوَةِ إِذَا دَعَاهُ وَعِيَادَةُ الْمَرِيضِ وَاتِّبَاعُ الْجَنَائِزِ 14531 وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أَخْبَرَنِي مُحَمَّدُ بْنُ عَبْدِ اللهِ بْنِ قُرَيْشٍ أنبأ الْحَسَنُ بْنُ سُفْيَانَ ثنا فَيَّاضُ بْنُ زُهَيْرٍ ثنا عَبْدُ الرَّزَّاقِ أنبأ مَعْمَرٌ عَنِ ابْنِ الْمُسَيِّبِ عَنْ أَبِي هُرَيْرَةَ ؓ فَذَكَرَهُ مَوْصُولًا وَرَوَاهُ مُسْلِمٌ فِي الصَّحِيحِ عَنْ عَبْدِ بْنِ حُمَيْدٍ عَنْ عَبْدِ الرَّزَّاقِ وَقَدْ كَانَ مَعْمَرٌ يُرْسِلُ هَذَا الْحَدِيثَ كَثِيرًا فَإِذَا سُئِلَ عَنْهُ أَسْنَدَهُ وَقَدْ أَسْنَدَهُ الْأَوْزَاعِيُّ وَيُونُسُ بْنُ زَيْدٍ وَعُقَيْلٌ