Is it permissible for the wife's brothers and sisters to inherit from the deceased husband's estate, knowing that the estate was the result of the joint work of both spouses, but it is registered only in the husband's name, and he has other heirs who are: (3 daughters, 1 wife, 21 full brothers, 2 full nephews, 1 full sister)?

As long as the inheritance is registered in the husband's name, it is his property. If the wife claims to be a partner and the heirs do not believe her, she must provide proof to the judiciary. Otherwise, the oath will be directed to the heirs. If they swear, the inheritance will be divided among them. If they refuse to swear, the wife will take what she claimed. The Prophet, peace and blessings be upon him, said: "The burden of proof is on the claimant, and the oath is on the one who denies."

The inheritance is divided as follows: the wife receives one-eighth due to the existence of a lineal descendant, and his daughters receive two-thirds. The remainder goes to the full sister and full brothers by 'asabah (agnatic succession), with the male receiving the share of two females. The sons of the full brother receive nothing as they are excluded by the full brother (hirmān exclusion).

The inheritance is divided into 3096 shares: - The wife: 387 shares (one-eighth). - The daughters: 2064 shares (two-thirds), with each receiving 688 shares. - Each full brother: 30 shares. - The full sister: 15 shares.