"The believer owes six duties toward his fellow believer: To visit him when he is sick, to attend his funeral when he dies, to accept his invitation, to greet him with Salam when he meets him, to reply to him (say: Yarhamuk Allah, may Allah have mercy on you) when he sneezes and to be sincere to him, whether he is absent or present." (Hasan).  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لِلْمُؤْمِنِ عَلَى الْمُؤْمِنِ سِتُّ خِصَالٍ يَعُودُهُ إِذَا مَرِضَ وَيَشْهَدُهُ إِذَا مَاتَ وَيُجِيبُهُ إِذَا دَعَاهُ وَيُسَلِّمُ عَلَيْهِ إِذَا لَقِيَهُ وَيُشَمِّتُهُ إِذَا عَطَسَ وَيَنْصَحُ لَهُ إِذَا غَابَ أَوْ شَهِدَ  

“The Muslim has four things due from the Muslim: He should answer [by saying Yarhamuk-Allah (may Allah have mercy on you)] to him if he sneezes (and says Al-Hamdulillah); he should accept his invitation if he invites him; he should attend his funeral if he dies; and he should visit him if he falls sick.” (Using translation from Ibn Mājah 1434)   

عَنِ النَّبِيِّ ﷺ قَالَ لِلْمُسْلِمِ عَلَى الْمُسْلِمِ أَرْبَعُ خِلَالٍ أَنْ يُجِيبَهُ إِذَا دَعَاهُ وَيُشَمِّتَهُ إِذَا عَطَسَ وَإِذَا مَرِضَ أَنْ يَعُودَهُ وَإِذَا مَاتَ أَنْ يَشْهَدَهُ  

[Machine] Narrated from the Prophet ﷺ that he used to say to the Muslim regarding his brother four etiquettes: when he calls him, he answers him; when he passes away, he attends his funeral; when he falls ill, he visits him; and when he sneezes, he says to him, "May Allah have mercy on you."  

عَنِ النَّبِيِّ ﷺ أَنَّهُ كَانَ يَقُولُ لِلْمُسْلِمِ عَلَى أَخِيهِ أَرْبَعُ خِلَالٍ إِذَا دَعَاهُ أنْ يُجِيبَهُ وَإِذَا مَاتَ أنْ يَشْهَدَهُ وَإِذَا مَرِضَ أنْ يَعُودَهُ وَأنْ يُشَمِّتَهُ إِذَا عَطَسَ  

"The believer owes six duties toward his fellow believer: To visit him when he is sick, to attend his funeral when he dies, to accept his invitation, to greet him with Salam when he meets him, to reply to him (say: Yarhamuk Allah, may Allah have mercy on you) when he sneezes and to be sincere to him, whether he is absent or present." (Hasan). (Using translation from Nasāʾī 1938)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «لِلْمُؤْمِنِ عَلَى الْمُؤْمِنِ سِتُّ خِصَالٍ يَعُودُهُ إِذَا مَرِضَ وَيَشْهَدُهُ إِذَا مَاتَ وَيُجِيبُهُ إِذَا دَعَاهُ وَيُسَلِّمُ عَلَيْهِ إِذَا لَقِيَهُ وَيُشَمِّتُهُ إِذَا عَطَسَ وَيَنْصَحُ لَهُ إِذَا غَابَ أَوْ شَهِدَ»  

"لِلمُسْلِم عَلَى أَخِيهِ الْمُسْلِم سِتُّ خصَال وَاجِبَةٌ، فَمَن تَرَكَ خَصْلَةً منْهَا فَقَدْ تَرَكَ حَقًّا وَاجِبًا لأَخِيهِ: إِذَا دَعَاهُ أَنْ يُجِيبَهُ، وإِذَا لَقِيَهُ أَنْ يُسَلِّمَ عَلَيهِ وَإِذَا عَطَسَ أَنْ يُشَمِّتَه، وَإِذَا مَرِضَّ أَنْ يَعُودَه، وَإِذَا مَاتَ أَنْ يَتَّبِعَ جِنَازَتَهُ, وَإِذَا اسْتَنْصَحَهُ أَنْ يَنْصَحَهُ".  

"لِلمُؤمِن عَلَى الْمُؤِمِن سِتُّ خصَال: يَعُودُهُ إِذَا مَرِضَ، وَيَشْهَدُهُ إِذَا مَاتَ، وَيُجِيبُهُ إِذَا دَعَاهُ، وَيُسَلِّمُ عَلَيهِ إِذَا لَقِيَهُ، وَيُشَمِّتُهُ إِذَا عَطَسَ، وَيَنْصَحُ لَهُ إِذَا غَابَ أَوْ شَهِدَ".