It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) concerning this saying of Allah, the Mighty and Majestic, "Those who disbelieve and turn (others) away from the path of Allah, He will make their deeds go astray" [Surah Muhammad: 1] , that he said: "Among them are the people of Makkah." And concerning "And those who believe and do righteous deeds" [Surah Muhammad: 2] , he said: "They are the Ansar." And concerning "and He will set right their condition," he said: "That is, Allah set right their affairs." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.