Section 20 in The Transfer of Property Act, 1882

Title: When unborn person acquires vested interest on transfer for his benefit .

Description: Where, on a transfer of property, an interest therein is created for the benefit of a person not then living, he acquires upon his birth, unless a contrary intention appear from the terms of the transfer, a vested interest, although he may not be entitled to the enjoyment thereof immediately on his birth.

Title: Contingent interest.

Description: Where, on a transfer of property, an interest therein is created in favour of a person to take effect only on the happening of a specified uncertain event, or if a specified uncertain event shall not happen, such person thereby acquires a contingent interest in the property. Such interest becomes a vested interest, in the former case, on the happening of the event, in the latter, when the happening of the event becomes impossible. Exception.-- Where, under a transfer of property, a person becomes entitled to an interest therein upon attaining a particular age, and the transferor also gives to him absolutely the income to arise from such interest before he reaches that age, or directs the income or so much thereof as may be necessary to be applied for his benefit, such interest is not contingent.

Title: Transfer to members of a class who attain a particular age.

Description: Where, on a transfer of property, an interest therein is created in favour of such members only of a class as shall attain a particular age, such interest does not vest in any member of the class who has not attained that age.

Title: Transfer contingent on happening of specified uncertain event.

Description: Where, on a transfer of property, an interest therein is to accrue to a specified person if a specified uncertain event shall happen, and no time is mentioned for the occurrence of that event, the interest fails unless such event happens before, or at the same time as, the intermediate or precedent interest ceases to exist.

Title: Transfer to such of certain persons as survive at some period not specified.

Description: Where, on a transfer of property, an interest therein is to accrue to such of certain persons as shall be surviving at some period, but the exact period is not specified, the interest shall go to such of them as shall be alive when the intermediate or precedent interest ceases to exist, unless a contrary intention appears from the terms of the transfer. Illustration A transfers property to B for life, and after his death to C and D, equally to be divided between them, or to the survivor of them. C dies during the life of B. D survives B. At B's death the property passes to D.

CHAPTER 2 OF TRANSFERS OF PROPERTY BY ACT OF PARTIES (A) Transfer of property, whether moveable or immoveable