Hazrat Ubaidullah bin Adi narrates from an Ansari companion (may Allah be pleased with him) that he presented himself before the Noble Prophet (peace and blessings be upon him) and, in a whisper, sought permission from the Noble Prophet (peace and blessings be upon him) to kill a hypocrite man. The Noble Prophet (peace and blessings be upon him) asked in a loud voice, "Does he not testify that there is no god but Allah?" He replied, "Why not, O Messenger of Allah! But he does not testify with his heart." The Noble Prophet (peace and blessings be upon him) asked, "Does he not testify that Muhammad (peace and blessings be upon him) is the Messenger of Allah?" He replied, "Why not, O Messenger of Allah! But he does not testify with his heart." The Noble Prophet (peace and blessings be upon him) asked, "Does he not perform prayer?" He replied, "Why not, O Messenger of Allah! But he does not perform prayer with his heart." The Noble Prophet (peace and blessings be upon him) said, "Allah has forbidden me from killing such people."