Two Legal Systems, One Estate
Every Indian Muslim's estate technically sits within reach of two separate legal frameworks: the Indian Succession Act, 1925 — the country's general succession code — and the Muslim Personal Law (Shariat) Application Act, 1937. In practice, only one of them governs how a Muslim's will and inheritance are actually distributed. Confusing the two is one of the most common — and most consequential — mistakes Indian Muslim families make when planning an estate.
Why the Indian Succession Act Doesn't Govern Muslim Inheritance
The Shariat Act of 1937 exists specifically to carve Muslims out of customary and general civil law for matters of marriage, inheritance, wills (wasiyyah), and gifts, and to place those matters under Islamic law instead. For inheritance and wills, this means the Indian Succession Act, 1925 — which applies by default to Indians who aren't otherwise covered by a personal law — takes a back seat. A Wasiyat estate plan applies the classical fara'id rules of your selected school of thought (Hanafi, Shafi'i, Maliki, Hanbali, Ja'fari, or Ahle Hadees) precisely because this is the framework that actually governs, not the general succession code.
Where the General Succession Framework Still Shows Up
The Shariat Act settles who inherits and how much — but it doesn't replace every piece of procedural machinery a family has to move through. Registering a will or transferring immovable property still runs through the Registration Act, 1908, and heirs claiming movable assets like bank deposits or securities commonly still need a succession certificate — a procedural instrument that traces back to the Indian Succession Act's general provisions, regardless of which personal law determined the underlying shares. In other words: Islamic law decides who gets what; general Indian procedural law often decides how that gets formally recognised and executed. Families who plan for only one half of this are the ones who end up stuck at a Sub-Registrar's counter, not the courtroom.
The Bequest Cap Is Where the Two Systems Diverge Most Sharply
Nowhere is the difference more concrete than testamentary freedom itself. Under the general common-law tradition the Indian Succession Act reflects, a testator can typically will their entire estate however they choose. Islamic law does not work that way: a wasiyyah can only dispose of up to one-third of the net estate, a limit that traces to the hadith of Sa'd ibn Abi Waqqas (Sahih al-Bukhari 2742) — “One-third, and one-third is much.” The remaining two-thirds are already spoken for, distributed by fixed Quranic shares among classified heirs. A will drafted as if the Indian Succession Act's unlimited testamentary freedom applied — leaving the whole estate to one child, for instance — is not a valid Islamic bequest, regardless of how it's registered.
Nominee vs. Heir — a Rule That Cuts Across Both Systems
One point of genuine overlap: nominee status. The Supreme Court clarified in Sarbati Devi v. Usha Devi (1984) that a nominee — on a bank account, insurance policy, or similar instrument — is a custodian, not an owner, under Indian law generally. That principle applies regardless of which personal law governs the underlying inheritance. Many Indian Muslim families mistake a nomination for a transfer of ownership; it isn't. The nominee is legally obligated to hand the asset over for distribution according to fara'id, exactly as if no nomination existed.
The Practical Takeaway
For an Indian Muslim family, the substantive question — who inherits, and how much — is answered by the Muslim Personal Law (Shariat) Application Act, 1937, not the Indian Succession Act, 1925. But the procedural layer — registration, stamp duty, succession certificates, court filing — still runs through the general Indian legal system, and it's state-specific on top of that. A complete estate plan has to satisfy both: Shariah-correct distribution, and a document that a Sub-Registrar or court will actually accept. This is exactly the gap Wasiyat's state execution packs are built to close.