It is narrated from Sayyidah Aishah (may Allah be pleased with her) that she said: the Messenger of Allah (peace and blessings be upon him) said: "Six people I have cursed, and Allah and every prophet whose supplication is answered has cursed them: (1) the one who adds to the Book of Allah, (2) the one who denies the decree of Allah, (3) the one who takes control with arrogance and tyranny in order to humiliate those whom Allah has honoured and to honour those whom Allah has humiliated, (4) the one who regards as lawful what Allah has made unlawful, (5) the one who regards as lawful, with regard to my offspring (the Ahl al-Bayt), what Allah has made unlawful, (6) and the one who abandons my Sunnah." Imam Bukhari (may Allah have mercy on him) used Ishaq bin Muhammad al-Farwi and Abd al-Rahman bin Abi al-Mawal as evidence in his "al-Jami' al-Sahih", and this chain is more correct than the first chain.