The attornment of a tenant to a stranger shall be void, and shall not in any wise affect the possession of his landlord, unless it is made:

1. (1) With the consent of the landlord; or
2. (2) Pursuant to or in consequence of a judgment at law, or a decree in equity, or sale under execution or deed of trust; or
3. (3) To a mortgagee, after the mortgage has been forfeited.

(RSMo 1939 § 2973)

Prior revisions: 1929 § 2586; 1919 § 6882; 1909 § 7885