Islamic Will (Wasiyyah) Requirements: What Every Muslim Should Know

Why a Wasiyyah Matters

The Wasiyyah (Islamic will) is an important way to record religious and practical wishes. A well-known hadith emphasizes keeping a will prepared when a person has something to bequeath. Despite this guidance, many South Asian Muslim families — particularly in the diaspora — don't have a valid will in place when death arrives.

The consequences of dying without a will vary by country, but the applicable intestacy rules do not automatically implement a Sharia-based distribution. A Muslim who wanted their estate divided according to Quranic rules may instead have it distributed under the local intestacy system.

The One-Third Rule

Islamic inheritance planning distinguishes prescribed heir shares from a bequeathable portion:

• The fixed shares (Fara'id): prescribed Quranic shares apply to parents, spouses, children, and other eligible heirs. The exact distribution depends on which relatives survive the deceased
• The bequeathable portion: up to one-third of the net estate can be bequeathed through the Wasiyyah. This is where the deceased can allocate gifts to non-heirs (friends, charities, orphanages, specific causes)

A common rule is that the one-third bequeathable portion is for beneficiaries outside the mandatory inheritance circle. A bequest to someone who already receives a fixed Quranic share can depend on the school of law and the consent of the other heirs, so do not use a Wasiyyah to give your eldest son a larger share without qualified advice.

If no Wasiyyah exists, the bequeathable one-third merges back into the estate and is distributed according to the fixed shares.

Basic Sharia Inheritance Shares

The Quranic inheritance system is detailed and context-dependent — the exact shares depend on which relatives survive the deceased. Some illustrative scenarios:

These simplified examples assume the listed relatives are the only heirs and that the estate's prior obligations have already been addressed.

If a man dies leaving a wife, two sons, and one daughter:

• Wife receives 1/8 of the estate
• The remaining 7/8 is divided among the children, with each son receiving twice the share of each daughter (this 2:1 ratio is explicitly Quranic — Surah An-Nisa, 4:11)

If a woman dies leaving a husband, one son, and both parents:

• Husband receives 1/4
• Each parent receives 1/6
• Son receives the remainder (5/12)

If a person dies leaving only a spouse and parents (no children):

• Spouse receives 1/4 (husband) or 1/2 (wife)
• Mother receives 1/3 of the remainder
• Father receives the rest

These calculations become significantly more complex with multiple categories of heirs, half-siblings, grandchildren, and cases where some heirs predecease the testator. Islamic inheritance (Ilm al-Fara'id) is a specialized field — for estates of any significant size, consulting a scholar or Islamic estate planner is strongly recommended.

Making It Legally Valid

A Wasiyyah written according to Islamic principles must also satisfy the legal requirements of the country where the estate will be probated. In practice, this means:

• In the UK: formal will requirements vary by jurisdiction within the UK. Have a local solicitor confirm the signing, witnessing, and probate requirements
• In the US: requirements vary by state. Have a local attorney confirm the signing, witnessing, and probate requirements
• In Pakistan: local personal-law and probate requirements apply; have a qualified local lawyer confirm how the Wasiyyah will operate
• In Bangladesh: local personal-law and probate requirements apply; have a qualified local lawyer confirm how the Wasiyyah will operate

The safest approach for diaspora families: have the Wasiyyah drafted by a solicitor or attorney who understands both Islamic inheritance principles and local probate law. Several UK-based Muslim organizations offer Wasiyyah drafting services at low or no cost — check with your local mosque.

What the Wasiyyah Should Include

Beyond financial bequests, a comprehensive Islamic will typically specifies:

• Funeral instructions: burial vs. repatriation preference, which mosque or community to coordinate with, and any specific wishes about the funeral
• Debts to be paid: Islamic law prioritizes debt repayment before inheritance distribution. Outstanding loans, unpaid Zakat, unfulfilled religious obligations (like missed fasts or an unperformed Hajj) should all be documented
• Charitable bequests: Sadaqah Jariyah (ongoing charity) or specific charitable gifts from the one-third bequeathable portion
• Guardian designation: for minor children, who should serve as guardian
• Executor appointment: who is responsible for administering the estate and ensuring the Sharia distribution is followed

Don't Wait

The most common mistake is treating the Wasiyyah as something to do "when I'm older." Prepare it while you have capacity. A basic Wasiyyah can be written in an afternoon, but local formalities still matter. Complex estates need professional help, and a document naming an executor, specifying funeral wishes, and recording the intended Islamic distribution should be checked for legal validity.

For a comprehensive guide that covers the Wasiyyah alongside every other stage of end-of-life and funeral planning for South Asian Muslim families, see our Muslim Funeral — South Asia planning guide.