Musannaf Ibn Abi Shaybah 34936 — What they said on a man who accepts

Qays (may Allah have mercy on him) said that a man came to Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) and said: "I passed by the mosque of the people of the tribe of Banu Hanifah, and I heard their imam reciting a recitation that Allah Almighty did not reveal to Muhammad (peace and blessings be upon him). Then I heard him reciting these words: 'Al-tahinati tahnan, fal-ajinati ajnan, fal-khabizati khabzan, fal-tharidati thardan, fal-laqimati laqman' (By those that grind a grinding, then those that knead a kneading, then those that bake a baking, then those that crumble bread into broth, then those that take morsels)." The narrator said: Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) sent for them, and those people were brought. There were one hundred and seventy men on the religion of Musaylimah, and their imam was Abdullah bin al-Nawwahah. He (may Allah be pleased with him) gave an order concerning him, and he was killed. Then he (may Allah be pleased with him) looked at the rest of them and said: "We will not please Satan by killing them. Take all these people to Syria. Perhaps Allah Almighty will finish them off through the plague."