N.Y. Real Prop. Acts. Law § 248

§ 248. Effect of conveyance where property is leased. An attornment to\na grantee is not requisite to the validity of a conveyance of real\nproperty occupied by a tenant, or of the rents or profits thereof, or\nany other interest therein. But the payment of rent to a grantor, by his\ntenant, before notice of the conveyance, binds the grantee; and the\ntenant is not liable to such grantee, before such notice, for the breach\nof any condition of the lease.\n