▁Kh ay bar ] ▁if ▁and ▁when ▁we ▁wish ▁to ▁exp el ▁you ." ▁Norman ▁Still man ▁bel ieves ▁that ▁this ▁is ▁probably ▁a ▁later ▁interpolation ▁intended ▁to ▁justify ▁the ▁exp ulsion ▁of ▁Jews ▁in ▁ 6 4 2 . ▁The ▁agreement ▁with ▁the ▁Jews ▁of ▁Kh ay bar ▁served ▁as ▁an ▁important ▁preced ent ▁for ▁Islam ic ▁Law ▁in ▁determ ining ▁the ▁status ▁of ▁d h imm is , ▁( non - Mus lim s ▁under ▁Muslim ▁rule ). ▁ ▁After ▁hearing ▁about ▁this ▁battle , ▁the ▁people ▁of ▁F ad ak , ▁al lied ▁with ▁Kh ay bar ▁during ▁the ▁battle , ▁sent ▁Mu ḥ ay y isa ▁b . ▁Mas ū d ▁to ▁Muhammad . ▁F ad ak ▁offered ▁to ▁be ▁" tre ated ▁len ient ly " ▁in ▁return ▁for ▁surrender . ▁A ▁treat y ▁similar ▁to ▁that ▁of ▁Kh ay bar ▁was ▁drawn ▁with ▁F ad ak ▁as ▁well . ▁ ▁Among ▁the ▁capt ives ▁was ▁Saf iy ya ▁b int ▁H uy ay y , ▁daughter ▁of ▁the ▁killed ▁Ban u ▁Nad ir ▁chief ▁H uy ay y ▁ibn ▁Ak ht ab ▁and ▁wid ow ▁of ▁Ken ana ▁ibn ▁al - R abi , ▁the ▁tre as urer ▁of ▁Ban u ▁Nad ir . ▁The ▁compan ions ▁informed ▁Muhammad ▁of ▁Saf iy ya ' s ▁good ▁family ▁status , ▁and ▁requested ▁him ▁to ▁accept ▁her ▁as ▁his ▁wife ▁so ▁as ▁to ▁preserve ▁her ▁prest ige ▁and ▁status . ▁Muhammad ▁acc eded ▁to ▁the ▁request , ▁and ▁fre