What presumption is taken in the case of two people who die in an uncertain circumstance, however,…

Under Section 21 of the Hindu Succession Act, 1956, where two persons die in circumstances making it uncertain whether either of them, and if so which, survived the other, it is presumed for all purposes affecting succession to property that the "Younger survived the elder". The presumption holds only until the contrary is proved, and no court reference or equal division is involved.