ed ▁and ▁married ▁her . ▁Thus , ▁Saf iy ya ▁became ▁one ▁of ▁the ▁M oth ers ▁of ▁the ▁Bel ie vers . ▁ ▁Ken ana ▁ibn ▁al - R abi , ▁when ▁asked ▁about ▁the ▁tre asure ▁they ▁brought ▁with ▁them ▁at ▁the ▁time ▁of ▁leaving ▁Med ina , ▁denied ▁having ▁any ▁such ▁tre asure . ▁He ▁was ▁told ▁that ▁in ▁case ▁the ▁tre asure ▁could ▁be ▁found ▁hidden , ▁he ▁would ▁face ▁death - pen alty ▁for ▁his ▁false ▁promise . ▁Ken ana ▁agreed ▁to ▁this . ▁A ▁Jew ▁told ▁Muhammad ▁that ▁he ▁had ▁seen ▁Al - R abi ▁near ▁a ▁certain ▁ru in ▁every ▁morning . ▁When ▁the ▁ru in ▁was ▁exc av ated , ▁it ▁was ▁found ▁to ▁contain ▁some ▁of ▁the ▁tre asure . ▁Ken ana ▁was ▁executed ▁as ▁a ▁result . ▁Sh ibli ▁N oman i ▁reject s ▁this ▁account , ▁and ▁arg ues ▁that ▁Ken ana ▁was ▁killed ▁because ▁he ▁had ▁earlier ▁murder ed ▁Mah m oud ▁ibn ▁Mas lam ah , ▁brother ▁of ▁Muhammad ▁ibn ▁Mas lam ah . ▁N oman i ' s ▁conclusion ▁is ▁in ▁contradiction ▁to ▁Wa q idi ' s ▁account , ▁in ▁which ▁it ▁was ▁Mar hab ▁who ▁killed ▁Mah m oud ▁in ▁the ▁course ▁of ▁the ▁battle , ▁only ▁to ▁be ▁killed ▁himself ▁a ▁few ▁days ▁later . ▁ ▁According ▁to ▁several ▁Muslim ▁trad itions , ▁a ▁Jewish ▁woman , ▁Ze yn ab ▁b int ▁Al - Har ith , ▁attempted ▁to ▁poison ▁Muhammad ▁to ▁a ven ge ▁her