It would be a surprise if one said that Allah’s Noble Apostle Salla Allahu ta’ala alayhi wa sallam , the most merciful amongst the creation, the owner of the loftiest character would get angry and curse someone. It is true that the master of mankind never took revenge for his own sake, never even got angry for personal reasons. But when the matter was one of breaching the divine law, he never let it pass – he used to get angry, and sometimes even invoked Allah’s curse on Allah’s enemies.
On the day of Al-Khandaq (the battle of the Trench), the Holy Prophet Salla Allahu ta’ala alayhi wa sallam said, “They (i.e. pagans prevented us from offering the middle Prayer till the sun had set. May Allah fill their graves, their houses (or their bodies) with fire.” Bukhari Shareef, Muslim Shareef
The Holy Prophet Salla Allahu ta’ala alayhi wa sallam used to recite the following invocations during Qunut: “O Allah! Save Salama bin Hisham. O Allah! Save Al-Walid bin Al-Walid. O Allah! Save `Aiyash bin Rabi`a O Allah ! Save the weak Muslims. O Allah! Be very hard on Mudar tribe. O Allah! Afflict them with years (of famine) similar to the (famine) years of the time of Prophet Joseph.” Bukhari Shareef
When Utaiba, son of Abu Lahab got separated from Kulsoom the daughter of the Holy Prophet Salla Allahu ta’ala alayhi wa sallam , he came to him and said, “I have rejected your religion, and divorced your daughter. Neither should you have any liking for me, nor do I have any love for you”. Upon this, the Holy Prophet Salla Allahu ta’ala alayhi wa sallam prayed, “O Allah! Set a dog amongst your dogs upon him (Utaiba bin Abu Lahab).” Tibrani in Kabeer (Utaiba was later sent by his father Abu Lahab, on a mission to Syria. Whilst he slept in a field, surrounded by camels and comrades to protect him from wild animals, a lion sought him out from others and tore him apart.)
While Allah’s Apostle Salla Allahu ta’ala alayhi wa sallam was praying beside the Ka`ba, there were some Quraish sitting in a gathering. One of them said, ‘Don’t you see this? Who amongst you can go and bring the dung, blood and the abdominal contents of the slaughtered camels of the family of so and so and then wait till he prostrates and put that in between his shoulders?’ The most unfortunate amongst them (`Uqba bin Abi Mu’ait) went away and when Allah’s Apostle Salla Allahu ta’ala alayhi wa sallam prostrated, he put them between his shoulders. The Holy Prophet Salla Allahu ta’ala alayhi wa sallam remained in prostration and they laughed so much so that they fell on each other. A passerby went to Fatima Radi Allahu anhu, who was a young girl in those days. She came running and the Prophet Salla Allahu ta’ala alayhi wa sallam was still in prostration. She removed them and cursed the Quraish on their faces. When Allah’s Apostle Salla Allahu ta’ala alayhi wa sallam completed his prayer, he said, ‘O Allah! Take revenge on Quraish.’ He said so thrice and added, ‘O Allah! take revenge on `Amr bin Hisham, `Utba bin Rabi`a, Shaiba bin Rabi`a, Al-Walid bin `Utba, Umaiya bin Khalaf, `Uqba bin Abi Mu’ait and `Umar a bin Al-Walid.” `Abdullah (the narrator) added, “By Allah! I saw all of them dead in the battle field on the day of Badr and they were dragged and thrown in the Qalib (a well) at Badr: Allah’s Apostle Salla Allahu ta’ala alayhi wa sallam then said, ‘Allah’s curse has descended upon the people of the Qalib (well). Bukhari Shareef
The Holy Prophet Salla Allahu ta’ala alayhi wa sallam invoked Allah for forty days to curse the murderers from the tribe of Ral, Dhakwan, Bani Lihyan and Bam Usaiya who disobeyed Allah and his Apostle Salla Allahu ta’ala alayhi wa sallam. Bukhari Shareef