What was the explanation of Ibn `Abbas (peace be upon him) about the Verse 'And (We) made you into Shu'ub and Qabail-- (49.13) ?
 Narrated Ibn `Abbas:                     Regarding the Verse: 'And (We) made you into Shu'ub and Qabail-- (49.13) that Shu'uib means the big Qabail (i.e. nations) while the Qabail (i.e. tribes) means the branch tribes.