Narrated to us Hajjaj ibn al-Sha'ir: narrated to us Abu al-Nadr, Hashim ibn al-Qasim al-Laythi: narrated to us Ibrahim — meaning Ibn Sa'd — narrated to us my father, from Abu Salama, from Abu Hurayra, from the Prophet, peace and blessings be upon him, who said: "There will enter Paradise people whose hearts are like the hearts of birds."