Allah Almighty says: {The believers are but brothers} [Surat al-Hujurāt: 10] He also says: {They will be humble towards the believers but strict towards the disbelievers} [Surat al-Mā’idah: 54] Allah Almighty also says: {firm against the disbelievers and compassionate among themselves} [Surat al-Fat'h: 29]
1) From the qualities of perfect believers are their humbleness and mercifulness towards their Muslim brothers and their power and toughness against their opponents and enemies from among the disbelievers. Such was the character of the Master of the Messengers (may Allah’s peace and blessings be upon him) and his noble Companions (may Allah be pleased with them).
2) Following the example of the Companions of the Messenger of Allah (may Allah’s peace and blessings be upon him) in their approaches and attitudes is the way to attain might and empowerment.
1567/1- Anas (may Allah be pleased with him) reported that the Prophet (may Allah’s peace and blessings be upon him) said: “Do not begrudge one another, do not envy one another, do not turn your backs on one another, do not break up with each other, and be, O slaves of Allah, brothers. It is unlawful for a Muslim to desert his brother beyond three (days).” [Narrated by Al-Bukhāri and Muslim]
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1) It is forbidden for Muslims to harbor hatred towards one another in any matter that does not involve a legitimate right.
2) It is forbidden for Muslims to boycott one another, because this disunites the Muslim nation and undermine its solidarity.
3) The Hadīth encourages Muslims to be brothers in Islam, as this is one of the most sublime bonds of faith.
1568/2- Abu Hurayrah (may Allah be pleased with him) reported that the Messenger of Allah (may Allah’s peace and blessings be upon him) said: “The gates of Paradise are opened on Monday and Thursday. Every slave who does not associate anything with Allah is forgiven except for the man who has enmity between him and his brother. It is said: ‘Leave these two until they have made a reconciliation. Leave these two until they have made a reconciliation.’” [Narrated by Muslim]
According to another narration by Muslim: “Deeds are presented (to Allah) every Monday and Thursday...” and he mentioned a similar version of the Hadīth.
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1) The Hadīth stresses the gravity of enmity, as it is mentioned alongside Shirk (associating partners with Allah Almighty).
2) Harboring enmity towards a Muslim and forsaking him without a Shariah-approved reason prevents one from entering Paradise in the Hereafter.
3) It is obligatory to reconcile between Muslims, help the oppressed, and deter the oppressor.