N.Y. Est. Powers & Trusts Law § 6-3.3

§ 6-3.3 Concerning the creation of certain future estates\n (a) Subject to the provisions of article 9:\n (1) An estate may be created to commence at a future time.\n (2) An estate for life may be created in a term of years and a future\nestate limited thereon.\n (3) A future estate may be limited after a term of years, provided\nthat, if such future estate is subject to a condition precedent, the\ncondition must occur within the period prescribed by article 9.\n (4) A fee or a lesser estate may be limited on a fee, subject to a\ncondition precedent which must occur within the period prescribed by\narticle 9.\n