Musannaf Ibn Abi Shaybah 34935 — What they said on a man who accepts

Harithah bin Mudarrib (may Allah have mercy on him) said that a man went out to have his mare covered. He passed by the mosque of the tribe of Banu Hanifah and prayed in it, and their imam recited the words of Musaylimah the Liar. This man came to Sayyiduna Ibn Mas'ud (may Allah be pleased with him) and informed him (may Allah be pleased with him) of this. He (may Allah be pleased with him) sent a messenger to summon those people, and they were all brought. Then he (may Allah be pleased with him) called on all of them to repent, and they all repented except Abdullah bin al-Nawwahah. He (may Allah be pleased with him) said to him: "O Abdullah, had I not heard the Messenger of Allah (peace and blessings be upon him) say: 'Were you not an envoy, I would have struck your neck.' But today you are not an envoy. O Kharashah, stand and strike his neck." So Kharashah stood up and struck his neck.