‘Abdallah b. ‘Umar told that he heard Allah's Messenger ﷺ say, “If anyone’s intercession intervenes as an obstacle to one of the punishments prescribed by Allah he has opposed Allah; if anyone disputes knowingly about something which is false he remains in the displeasure of Allah most high till he desists; and if anyone makes an untruthful accusation against a Muslim he will be made by Allah to dwell in the corrupt fluid flowing from the inhabitants of hell* till he retracts his statement.” Ahmad and Abu Dawud transmitted it. * Radghat al-khabal. In a version by Baihaqi in Shu'ab al-iman it says, “He who assists in a dispute, not knowing whether it is true or false, will remain in Allah’s displeasure till he desists.” Baihaqi in Shu'ab al-iman