N.Y. Estates, Powers & Trusts Law § 13-1.3
which assets appropriated; abatement
(a) All of the property of a decedent, and any income therefrom in the course of estate administration, is chargeable with the payment of:
(c) Whenever such property is insufficient to satisfy both the estate obligations described in subparagraph (a) (1) and all dispositions under the will, interests in the decedent's estate abate, for the purpose of paying such estate obligations, in the following order: