One of the most dangerous assumptions in Indian property transactions is that a release deed signed by a father permanently ends all future family claims. Under Hindu law, this belief is often legally wrong—especially when the property is ancestral.

To understand when a son can or cannot claim a share, we must look at how the property is classified and who participated in the partition. Courts have drawn very clear lines on this.

Family Background Assumed

• Parties governed by Hindu Succession Act, 1956 (as amended in 2005)
• Property originally belonged to the grandfather
• He had two sons:
  • Person A
  • Person B
• Person C is the son of Person A
• Person D is the son of Person B

Scenario 1: Ancestral Property – No Partition Done

Legal Nature

When ancestral property is undivided, it is coparcenary property.

Coparceners include:

• Grandfather
• Person A
• Person B
• Person C (son of A)
• Person D (son of B)
  (+ daughters, if alive post-2005)

What If Person A Signs a Release Deed Before Partition?

• Person A can release only his undivided interest
• He cannot surrender the birthright of Person C
• The release deed does not bind Person C

Key Supreme Court Authority (Scenario 1)

C.N. Arunachala Mudaliar v. C.A. Muruganatha Mudaliar (1953, SC)

Legal principle:
Ancestral property remains ancestral until a lawful and complete partition. A father cannot defeat his son’s coparcenary right by unilateral action.

Result

• ✔ Person C can claim his share
• ✔ Release deed valid only to A’s extent
• ✔ Person C can file:
  • Partition suit
  • Declaration that release deed does not affect his share

📌 Settled rule:
A father cannot waive away a son’s right in unpartitioned ancestral property.

Scenario 2: Property Already Partitioned

Assume:

• Total land = 10 acres
• 5 acres to Person A
• 5 acres to Person B

Now the critical issue:
👉 What is the nature of A’s 5 acres?

Case 2A: Partition Between Brothers Only

(Grandfather died → only A and B divided property)

Legal Position

• A’s 5 acres continues to be ancestral property
• Person C acquires a birthright in A’s share

Can A Execute a Release Deed?

• ❌ Not fully
• A can release only his portion
• He cannot extinguish C’s share

Key Supreme Court Authorities (Case 2A)

Yudhishter v. Ashok Kumar (1987, SC)

Held:
Property received by a coparcener on partition remains ancestral vis-à-vis his sons.

Commissioner of Wealth Tax v. Chander Sen (1986, SC)

Clarified distinction between:

• Property inherited under the Act (may become self-acquired)
• Property obtained through ancestral partition (does not)

Uttam v. Saubhag Singh (2016, SC)

Held:
Incomplete partitions that exclude coparceners do not destroy birthrights.

Result

• ✔ Person C can claim his share
• ✔ Release deed is partially invalid
• ✔ Buyers relying only on A’s release deed face legal risk

Case 2B: Partition Includes All Coparceners

(A, B, C and Person D were parties to the partition)

Legal Position

• Partition is final and binding
• Coparcenary status ends
• A’s 5 acres becomes absolute / separate property

Can A Execute a Release Deed Now?

• ✅ Yes
• A is the sole owner
• Person C’s right is exhausted

Key Supreme Court Authority (Case 2B)

Uttam v. Saubhag Singh (2016, SC)

Held:
Once all coparceners are parties to a lawful partition, the property loses its ancestral character and becomes absolute.

Result

• ❌ Person C cannot claim any share
• ❌ No birthright survives
• ✔ Release deed is 100% valid

*Coparceners are family members who acquire a legal birthright in ancestral property and can demand partition.

Final Legal Position

The statement:

“Person A can give a release deed and Person C cannot claim any share”

is:

• ❌ Wrong in Scenario 1
• ❌ Wrong in Case 2A
• ✅ Correct only in Case 2B

One-Line Rule to Remember

If ancestral property is not partitioned with all coparceners, the son’s right survives.
If partition is complete and binding, the father’s share becomes absolute.

Why This Matters for Property Buyers

Many disputes arise because:

• Partitions excluded sons or daughters
• Release deeds were relied on blindly
• Ancestral nature was misunderstood

This is exactly why platforms like Verified.RealEstate emphasise coparcenary checks, partition scrutiny, and legal history validation before any transaction.