(19) بَابُ فَضْلِ قَوْلِ اللَّهِ تَعَالَى: {وَلاَ تَحْسِبَنَّ الَّذِينَ قُتِلُوا فِي سَبِيلِ اللَّهِ أَمْوَاتًا بَلْ أَحْيَاءٌ عِنْدَ رَبِّهِمْ يُرْزَقُونَ فَرِحِينَ بِمَا آتَاهُمُ اللَّهُ مِنْ فَضْلِهِ وَيَسْتَبْشِرُونَ بِالَّذِينَ لَمْ يَلْحَقُوا بِهِمْ مِنْ خَلْفِهِمْ أَنْ لاَ خَوْفٌ عَلَيْهِمْ وَلاَ هُمْ يَحْزَنُونَ يَسْتَبْشِرُونَ بِنِعْمَةٍ مِنَ اللَّهِ وَفَضْلٍ وَأَنَّ اللَّهَ لاَ يُضِيعُ أَجْرَ الْمُؤْمِنِينَ}
Narrated Anas bin Malik:
For thirty days Allah's Messenger (ﷺ) invoked Allah to curse those who had killed the companions of Bir- Mauna; he invoked evil upon the tribes of Ral, Dhakwan, and Usaiya who disobeyed Allah and His Apostle. There was reveled about those who were killed at Bir-Mauna a Qur'anic Verse we used to recite, but it was cancelled later on. The Verse was: "Inform our people that we have met our Lord. He is pleased with us and He has made us pleased."
Reference: Sahih al-Bukhari 2814
In-book reference: Book 56, Hadith 30
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 69