Wives have a share in the inheritance, as long as they had a valid marriage to the husband at the time of his demise, or they are within the iddah period of a reconcilable divorce. Having children is not a condition for them being a heir.

If the husband had any descendants (regardless of who their mother is), then all the wives will receive 1/8 ^th of the estate, i.e. if there were two wives then each will get 1/16

فإن كان لكم ولد فلهن الثمن مما تركتم

 

But if you leave a child, then for them (wives) is an eighth of what you leave

 

^{— Quran 4:12}

أن يكون فرضها الثمن، وذلك إذا كان للزوج فرع وارث منها أو من غيرها

 

The wife's prescribed share is an eighth and this is when the husband has a child who is a heir, whether from her or some other wife

 

^{— الموسوعة الفقهية}

Wives have a share in the inheritance, as long as they had a valid marriage to the husband at the time of his demise, or they are within the iddah period of a reconcilable divorce. Having children is not a condition for them being a heir.

If the husband had any descendants (regardless of who their mother is), then all the wives will receive 1/8 ^th of the estate, i.e. if there were two wives then each will get 1/16

فإن كان لكم ولد فلهن الثمن مما تركتم

But if you leave a child, then for them (wives) is an eighth of what you leave

^{— Quran 4:12}

أن يكون فرضها الثمن، وذلك إذا كان للزوج فرع وارث منها أو من غيرها

The wife's prescribed share is an eighth and this is when the husband has a child who is a heir, whether from her or some other wife

^{— الموسوعة الفقهية}