The Sufa and the Prophet's Customs

A string was hung between the two pillars of the sufa. Food would be put on it for those who couldn't afford to buy it. Abu Harira came to Medina after the Battle of Khaybar, i.e. after the seventh year of the Hijra. He narrated so many hadith that even some of the next generation questioned how he could know so much when others were longer companions than him.