This excerpt is taken from Sheikh Abu Hamza Abdul Khaliq Siddiqi's book Sahih Fazail-e-Amaal.
Allah Almighty says:
﴿فَمَا أُوتِيتُم مِّن شَيْءٍ فَمَتَاعُ الْحَيَاةِ الدُّنْيَا ۖ وَمَا عِندَ اللَّهِ خَيْرٌ وَأَبْقَىٰ لِلَّذِينَ آمَنُوا وَعَلَىٰ رَبِّهِمْ يَتَوَكَّلُونَ . وَالَّذِينَ يَجْتَنِبُونَ كَبَائِرَ الْإِثْمِ وَالْفَوَاحِشَ وَإِذَا مَا غَضِبُوا هُمْ يَغْفِرُونَ .﴾
"So whatever you have been given is but the enjoyment of worldly life, and what is with Allah is better and more lasting for those who have believed and rely upon their Lord, and avoid the major sins and immoralities, and when they are angry, they forgive."
Reference: (42-Ash-Shura:36,37)
He further said:
﴿وَأَطِيعُوا اللَّهَ وَالرَّسُولَ لَعَلَّكُمْ تُرْحَمُونَ . وَسَارِعُوا إِلَىٰ مَغْفِرَةٍ مِّن رَّبِّكُمْ وَجَنَّةٍ عَرْضُهَا السَّمَاوَاتُ وَالْأَرْضُ أُعِدَّتْ لِلْمُتَّقِينَ .الَّذِينَ يُنفِقُونَ فِي السَّرَّاءِ وَالضَّرَّاءِ وَالْكَاظِمِينَ الْغَيْظَ وَالْعَافِينَ عَنِ النَّاسِ ۗ وَاللَّهُ يُحِبُّ الْمُحْسِنِينَ.﴾
"Obey Allah and His Messenger so that you may be shown mercy. And hasten to the forgiveness of your Lord and a garden as wide as the heavens and earth, prepared for the righteous, who spend [in the cause of Allah] during ease and hardship and who restrain anger and who pardon the people - and Allah loves the doers of good."
Reference: (3-Aal Imran:132 to 134)
In these noble verses, Allah Almighty mentions those distinguished servants who will be deserving of Paradise and Allah’s pleasure. Among these chosen servants are those who control their anger. It is not right to get angry over small trivial matters or at every little thing. Yes! Where the matter concerns Shariah, religion, etc., where divine prohibitions are violated, there it is praiseworthy to get angry.
عن أبى هريرة رضى الله عنه أن رسول الله صلى الله عليه وسلم قال: ليس الشديد بالصرعة، إنما الشديد الذى يملك نفسه عند الغضب .
It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace be upon him) said: "The strong is not the one who overcomes the people by his strength, but the strong is the one who controls himself while in anger."
Reference: Sahih Bukhari, Book of Manners, Chapter: Beware of Anger, No: 6114 - Sahih Muslim, Book of Virtue, Enjoining Good Manners and Joining of the Ties of Kinship, Chapter: The Virtue of Controlling One’s Anger, No: 2609.
عن معاذ بن أنس رضى الله عنه أن رسول الله صلى الله عليه وسلم قال: من كظم غيظا، وهو قادر على أن ينفذه، دعاه الله سبحانه وتعالى على رؤوس الخلائق يوم القيامة حتى يخيره من الحور العين ما شاء .
It is narrated from Sayyiduna Mu'adh bin Anas (may Allah be pleased with him) that the Prophet Muhammad (peace be upon him) said: "Whoever suppresses his anger while he is able to act upon it, Allah will call him on the Day of Resurrection in front of all creation and say to him: Choose for yourself whichever Houri (beautiful maiden) you wish."
Reference: Sunan Tirmidhi, Book of the Description of the Day of Resurrection, No: 2493 - Sunan Abu Dawood, Book of Manners, Chapter: Whoever Controls His Anger, No: 4777 - Al-Albani (may Allah have mercy on him) graded it Hasan.
It is narrated from Sayyiduna Abu Darda (may Allah be pleased with him) that a man asked the Messenger of Allah (peace be upon him): "Tell me of an action that will admit me to Paradise?" He (peace be upon him) said: "Do not get angry and you will enter Paradise."
Reference: At-Targhib wa At-Tarhib, Book of Manners, Chapter: Warning Against Anger, No: 4050 - Sahih Al-Jami' As-Saghir, No: 7374.
