Transfer of Property Act, 1882
29. Fulfillment of condition subsequent
An ulterior disposition of the kind contemplated by the last preceding section cannot take effect unless the condition is strictly fulfilled.
A transfers Rs. 500 to B, to be paid to him on his attaining his majority or marrying, with a proviso that, if B dies as minor or marries without C's consent, Rs. 500 shall go to D. B marries when only 17 years of age, without C's consent. The transfer to D takes effect.