Musannaf Ibn Abi Shaybah

Hazrat Ubaidullah bin Abdullah bin Utbah (may Allah have mercy on him) narrates that when those people who had turned apostate during the time of Hazrat Abu Bakr Siddiq (may Allah be pleased with him) became apostates, Hazrat Abu Bakr (may Allah be pleased with him) intended to wage jihad against them. Upon this, Hazrat Umar (may Allah be pleased with him) said: Will you (may Allah be pleased with you) fight against those people even though you (may Allah be pleased with you) have indeed heard the Messenger of Allah (peace and blessings be upon him) say that whoever testifies that there is no deity worthy of worship except Allah and indeed Muhammad is the Messenger of Allah, then his wealth becomes forbidden (to be taken) except by the right of Allah, and his reckoning is with Allah, the Lord of Might? Hazrat Abu Bakr (may Allah be pleased with him) replied: Should I not fight against the one who differentiates between prayer and zakat? By Allah! I will surely fight against the one who makes a distinction between the two, until I bring them both together. Hazrat Umar (may Allah be pleased with him) says: So we fought along with him while he was indeed upon guidance. Then, when he (may Allah be pleased with him) was victorious over as many of them as he could, he (may Allah be pleased with him) said: You people must choose one of two things from me: either a war that will exile you, or a land that will disgrace you. They said: We understand what an exiling war is, but what is meant by a land that will disgrace us? He (may Allah be pleased with him) replied: You must testify regarding our slain that they are indeed in Paradise, and regarding your slain that they are indeed in Hellfire. So they did so.