What did Prophet Muhammad (saw) reveal about the killing of a believer according to Ibn `Abbas?
 Narrated Sa`id bin Jubair:                     The people of Kufa differed as regards the killing of a believer so I entered upon Ibn `Abbas (and asked him) about that. Ibn `Abbas said, "The Verse (in Surat-An-Nisa', 4:93) was the last thing revealed in this respect and nothing cancelled its validity."