The tribes of Ril, Zakwan, Usayya, and Banu Lihyan came to the Prophet ﷺ claiming they had embraced Islam, and they asked him for support against their people. So the Prophet ﷺ sent seventy men from the Ansar to assist them.Anas said, "We used to call them the Reciters. They would gather firewood by day and pray by night."The tribesmen set out with them until they reached the well of Maunah, where they betrayed and killed them. The Prophet ﷺ then performed the qunut for a month, supplicating against Ril, Zakwan, and Banu Lihyan.Qatada said, Anas told us that a Quranic verse was recited concerning them, "Convey to our people on our behalf that we have met our Lord, and He is pleased with us and has pleased us." This verse was later abrogated.
حدثنا محمد بن بشار حدثنا ابن أبي عدي وسهل بن يوسف عن سعيد عن قتادة
أن النبي ﷺ أتاه رعل وذكوان وعصية وبنو لحيان فزعموا أنهم قد أسلموا واستمدوه على قومهم فأمدهم النبي ﷺ بسبعين من الأنصار قال أنس كنا نسميهم القراء يحطبون بالنهار ويصلون بالليل فانطلقوا بهم حتى بلغوا بئر معونة غدروا بهم وقتلوهم فقنت شهرا يدعو على رعل وذكوان وبني لحيان قال قتادة وحدثنا أنس أنهم قرءوا بهم قرآنا ألا بلغوا عنا قومنا بأنا قد لقينا ربنا فرضي عنا وأرضانا ثم رفع ذلك بعد