What did the Prophet Muhammad (saw) say were the best houses of the Ansar?
 Narrated Abu Usaid:                     Allah's Apostle said, "The best of the Ansar's houses are those of Bani An-Najjar, then those of Bani `Abdul Ash-hal, then those of Bani Al-Harith bin Al-Khazraj, then those of Bani Saida; but there is goodness in all the houses of the Ansar." Sa`d bin Ubada who was one of those who embraced Islam early, said, "I see that Allah's Apostle is giving others superiority above us." Some people said to him, "But he has given you superiority above many other people."