He will never deceive them or act against his promises to them.
He will never deceive them or act against his promises to them.” [^5] In another tradition we read: Abi Basir narrated that he heard Imam Sadiq say: المُؤمِنُ أخُو المُؤمِنِ كَالجَسَدِ الواحِدِ إنْ اشْتَكى شَيْئاً مِنهُ وُجِدَ ألَمَ ذلِكَ في سائِرِ جَسَدِهِ، وأرْواحُهُما مِن رُوحٍ واحِدَةٍ وإنَّ رُوحَ المُؤمِنِ لأشَدُّ اتِّصالاً بِروحِ اللهِ مِن اتِّصالِ شُعاعِ الشَّمْسِ بها. “A believer is the brother of other believers. They are all parts of the same body.
If one part hurts, other parts will feel the pain. Their souls are also derived from One Spirit. A believer’s soul is so strongly attached to God’s Spirit that it is like the attachment of the sun’s rays to the sun.” [^6] Brotherhood: the Greatest Blessing The importance of the blessing of brotherhood is stressed in the Holy Qur’an as we read in the following verse: وَاعْتَصِمُواْ بِحَبْلِ اللّهِ جَمِيعًا وَلاَ تَفَرَّقُواْ وَاذْكُرُواْ نِعْمَتَ اللّهِ عَلَيْكُمْ إِذْ كُنتُمْ أَعْدَاء فَأَلَّفَ بَيْنَ قُلُوبِكُمْ فَأَصْبَحْتُم بِنِعْمَتِهِ إِخْوَانًا وَكُنتُمْ عَلَىَ شَفَا حُفْرَةٍ مِّنَ النَّارِ فَأَنقَذَكُم مِّنْهَا كَذَلِكَ يُبَيِّنُ اللّهُ لَكُمْ آيَاتِهِ لَعَلَّكُمْ تَهْتَدُونَ “And hold fast, all together, by the rope which God (stretches out for you), and be not divided among yourselves; and remember with gratitude God's favor on you; for ye were enemies and He joined your hearts in love, so that by His Grace, ye became brethren; and ye were on the brink of the pit of Fire, and He saved you from it.
Thus doth God make His Signs clear to you: That ye may be guided.” [The Holy Qur’an, Al-i-Imran 3:103] This verse was revealed about the two large tribes of Oas and Khazraj that had deeply-rooted animosities with each other. Once the Prophet entered Medina, he settled their affairs and made them brothers one to another. However, at times they forgot this brotherhood and fighting broke out between them. However, the Prophet would immediately resolve their differences.
The Prophet instructed the Muslims to express their love and friendship to each other since it has a very important influence on the continuation of brotherhood. He said: “When one of you likes another one he should let him know about it.” [^7] The Reward of Visiting Believing Brothers There is a chapter on visiting believing brothers in Usul al-Kafi in which there are many traditions pointing out the reward of visiting our believing brothers. We shall only cite a few of them here.