Riyad Us-Saliheen (Gardens of the Righteous)
Prohibition of Nursing Rancor and Enmity
Allah, the Exalted, says:
"The believers are nothing else than brothers (in Islamic religion).'' (49:10)
"... humble towards the believers, stern towards the disbelievers ...'' (5:54)
"Muhammad (PBUH) is the Messenger of Allah, and those who are with him are severe against disbelievers, and merciful among themselves.'' (48:29)
1567. Anas bin Malik (May Allah be pleased with him) said: The Prophet (PBUH) said, "Do not harbour grudge against one another, nor jealousy, nor enmity; and do not show your backs to one another; and become as fellow brothers and slaves of Allah. It is not lawful for a Muslim to avoid speaking with his brother beyond three days.''
[Al-Bukhari and Muslim].
Commentary: "Do not harbour grudge against one another'' means that one should not say or do any thing which is likely to create ill-will and hatred in others. "Nor jealousy'' signifies that if a Muslim is granted any blessing by Allah, one should not wish that he be deprived of it. "Do not show your backs to one another'' means that if you come across one another, exchange salutations rather than avoid each other. Since all such things create conflict and dissension, these are strictly forbidden in Islam. Muslims are required to resume their conversation and contacts after a maximum period of three days. Any breach beyond this period is prohibited.
1568. Abu Hurairah (May Allah be pleased with him) said: The Messenger of Allah (PBUH) said, "The gates of Jannah are opened on Mondays and Thursdays, and then every slave (of Allah) is granted forgiveness if he does not associate anything with Allah in worship. But the person in whose heart there is rancour against his (Muslim) brother, they will not be pardoned and with regard to them it will be said twice: `Hold both of them until they are reconciled with each other.'''
Commentary: We learn from this Hadith that mutual enmity, grudge and malice are bound to deprive a man from Jannah in the Hereafter.