Illinois Statutes Chapter 765. Property § 5/7. After-acquired title; when it enures

§ 7. If any person shall sell and convey to another, by deed or conveyance, purporting to convey an estate in fee simple absolute, in any tract of land or real estate, lying and being in this state, not then being possessed of the legal estate or interest therein at the time of the sale and conveyance, but after such sale and conveyance the vendor shall become possessed of and confirmed in the legal estate to the land or real estate so sold and conveyed, it shall be taken and held to be in trust and for the use of the grantee or vendee; and the conveyance aforesaid shall be held and taken, and shall be as valid as if the grantor or vendor had the legal estate or interest, at the time of said sale or conveyance.