Al-Adab Al-Mufrad, Hadith 321 ⓘ
Abu Hurayra said, "The Messenger of Allah, may Allah bless him and grant him peace, was asked, "Messenger of Allah, invoke a curse for us against the idolaters.' He replied, 'I was not sent as a curser. I was sent as a mercy.'"
حَدَّثَنَا مُحَمَّدٍ قَالَ: عَبْدُ اللهِ بْنُ محمد قال حَدَّثَنَا مَرْوَانُ بْنُ مُعَاوِيَةَ، حَدَّثَنَا يَزِيدُ، عَنْ أَبِي حَازِمٍ، عَنْ أَبِي هُرَيْرَةَ قَالَ: قِيلَ: يَا رَسُولَ اللهِ، ادْعُ اللَّهَ عَلَى الْمُشْرِكِينَ، قَالَ: إِنِّي لَمْ أُبْعَثْ لَعَّانًا، وَلَكِنْ بُعِثْتُ رَحْمَةً.
also referenced under: Book 15, Hadith 13 (In-Book) & Book 15, Hadith 321 (English)