Islamic estate planning requires balancing lifetime gift distribution with obligatory post-mortem inheritance rules to ensure equity among family members. Within Islamic jurisprudence, the laws governing inheritance (mirath) are fixed and divine, leaving no room for arbitrary alteration after death. However, individuals retain flexibility to manage and distribute their assets during their lifetime through gifts (hibah), provided they maintain strict justice among their dependents and heirs.

Lifetime Gifts and Bequests

A fundamental distinction exists in Islamic law between assets gifted during a person’s lifetime (hibah) and assets distributed after death through a last will (wasiyyah). So long as an individual is alive, mentally competent, and not facing imminent death—defined by jurists as a terminal condition where physicians expect death within a year—they maintain freedom to manage their wealth.

When distributing gifts during one’s lifetime, parents are obligated to maintain fairness among their children. This obligation is rooted in the instruction of the Prophet Muhammad:

Fear Allah and be just among your children.” (Sahih al-Bukhari, 2587; Sahih Muslim, 1623)

If a parent previously provided financial support for older children’s major life milestones—such as marriage or higher education—the parent is permitted during their lifetime to gift an equivalent sum to a younger child to cover similar expenses, thereby establishing equity among siblings.

Limitations on Bequests in a Last Will

Once a person passes away, their estate must be distributed according to mandatory Quranic inheritance ratios. A last will (wasiyyah) cannot be utilized to grant additional shares or extra assets to an existing legal heir. In Islamic law, a bequest to an heir is legally invalid, and any voluntary bequest in a will is strictly limited to non-heirs, capped at a maximum of one-third of the net estate after settling debts and funeral expenses.

Furthermore, the consent of siblings or co-heirs during a parent’s lifetime does not validate assigning extra bequests to specific legal heirs within a last will.

Treatment of Spouses and Real Estate Assets

When a husband owns real estate occupied by his wives, the legal status of those properties depends on how ownership was designated during his lifetime:

  • Registered Lifetime Gifts: If a husband officially registered and transferred ownership of separate residences to each wife as lifetime gifts, he must ensure equity between them. If market conditions render one property significantly more valuable than the other, he is obligated to compensate the wife who received the lower-value property with additional funds or assets to achieve balance.
  • Unregistered Estate Properties: If the properties were not legally transferred or registered in the wives’ names during the husband’s lifetime, the houses remain part of his general estate upon death. In this scenario, neither wife owns her respective house outright. Instead, both wives collectively receive the prescribed Quranic share for wives—which is one-eighth of the total net estate divided equally between them (yielding one-sixteenth each) when children are present.

In legal jurisdictions where civil laws do not automatically apply Islamic inheritance rules, individuals are responsible for executing a legally binding last will that explicitly mandates the distribution of their estate in accordance with Islamic jurisprudence.